“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
159 entries match your criteria. The first 100 are listed.                                               The final 59 


ASCE Civil Engineering Landmarks Historical Markers

More than 200 markers sponsored by the American Society of Civil Engineers recognizing historically significant local, national, and international civil engineering projects, structures, and sites.
Ellicott's Stone image, Touch for more information
By Mark Hilton, December 4, 2013
Ellicott's Stone
1 Alabama, Mobile County, Le Moyne — Ellicott's StoneErected April 9th, 1799 Reported damaged
Marks 1st Southern Boundary of the United States and the Mississippi Territory created in 1798 -----900 feet East----- Stone marked 31° North Latitude separating the U.S. & Spanish Florida. This line of demarcation ran from the . . . Map (db m104073) HM
2 Alaska, Juneau Borough, Juneau, Downtown Juneau — Alaska Governor's Mansion
A sum of $40,000 was authorized under the Public Building Act of 1910 and construction began in 1912. Governor Walter D. Clark held the first open house January 1, 1913. State of Alaska Governor Walter J. Hickel Alaska Centennial . . . Map (db m181739) HM
3 Arizona, Cochise County, San Simon — The San Simon Rest Area - Percy Jones, Jr.
Dedicated to the Engineering Achievements of Percy Jones, Jr. 1888 – Chief locating engineer who by sheer genius personally located more miles of Arizona highways than any other person. His college training in mining and geology . . . Map (db m37899) HM
4 Arizona, Cochise County, San Simon — The San Simon Rest Area - Percy Jones, Jr.
Dedicated to the Engineering Achievements of Percy Jones, Jr. 1888 – Chief locating engineer who by sheer genius personally located more miles of Arizona highways than any other person. His college training in mining and geology . . . Map (db m37900) HM
5 Arizona, Coconino County, Grand Canyon National Park — Kaibab Trail Suspension BridgeNational Historic Civil Engineering Landmark
Constructed in 1928, the Kaibab Trail Suspension Bridge was the only crossing of the Colorado River in a distance of 754 miles from Moab, Utah to Needles, California. Built in a remove location with incredibly difficult access through rugged . . . Map (db m173929) HM
6 Arizona, Coconino County, Marble Canyon — Navajo Bridge
There are three markers on this end of the Navajo Bridge. (Marker on left:) National Historical Civil Engineering Landmark American Society of Engineers 1852 Designated by the American Society of Civil Engineers . . . Map (db m94887) HM
7 Arizona, Coconino County, Page — Colorado River Storage Project / Glen Canyon DamReclamation: Managing Water in the West
Colorado River Storage Project In recognition of the vision of the Colorado River Storage Project Act of 1956 and the significant contributions the act has made to the development of the Upper Colorado River Basin states, this plaque . . . Map (db m40350) HM
8 Arizona, Maricopa County, Mesa — Prehistoric Irrigation in the Salt River Valley
Approximately 300 B.C. Prehistoric Indians entered the Salt River Valley. They developed an extensive canal system and raised corn, beans, squash, agave and cotton. Over 500 miles of Hohokam canal have been recorded in the Salt River . . . Map (db m49877) HM
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9 Arizona, Yavapai County, Bumble Bee — The Sunset Point Rest AreaDedicated to the Engineering Achievement of — William Clayton LeFebvre, 1890-1964 —
A colorful administrator, he is credited with establishing the basic location of Arizona's billion-dollar Interstate Highway System. He served as State Engineer twice, from 1924 to 1928 and from 1945 to 1951. He devoted much of his final term to . . . Map (db m40780) HM
10 California, Alameda County, San Leandro — Chabot Dam
Chabot Dam, originally called San Leandro Dam, was built by Anthony Chabot who started Contra Coast Water Company in 1868. When artesian wells and Temescal and Sausal Creeks failed to bring Oakland and surrounding cities enough water he decided . . . Map (db m71714) HM
11 California, Alameda County, Sunol — Alameda Creek Water SystemSunol Water Temple Restoration
Main marker: California Historic Civil Engineering Landmark. Alameda Creek Water System, 1888. San Francisco Section A802, 1975. Second marker: Restoration of the Sunol Water Temple. Started May 27, 1997. . . . Map (db m24499) HM
12 California, Humboldt County, Fernbridge — Fernbridge
Dedicated on November 16, 1911 and affectionately known as the "Queen of Bridges", it was the longest reinforced concrete arch structure in the world at the time of its construction. The bridge was designed by John B. Leonard, Civil Engineer, . . . Map (db m71907) HM
13 California, Kern County, Lebec — Interstate Highway 5
The California Outstanding Civil Engineering Achievement - 1980, Interstate Highway 5, designated by the California State Council, ASCE.Map (db m192222) HM
14 California, Kern County, Tehachapi — Tehachapi Pass Railroad LineConstructed 1874 – 1876 — Commemorated October 1998 —
In front of you is the world famous Tehachapi Loop which is about halfway upgrade to the Tehachapi Pass. This steep line averages 2.2% in gradient in its 28 miles of length. This feat of civil engineering genius was crowning achievement of civil . . . Map (db m134431) HM
15 California, Los Angeles County, Gorman — The “Ridge Route”California Historic Civil Engineering Landmark — Constructed 1914-1915 —
In front of you in the hills, high above freeway Interstate 5, is a portion of the historic 1915 two-lane “Ridge Route”. The power lines follow it. The original Ridge Route was constructed in 1914-1915 by pick, shovel and mule drawn Fresno . . . Map (db m152085) HM
16 California, Los Angeles County, Los Angeles, Sylmar — 653 — "The Cascades" Reported missing
This is the terminus of the Los Angeles-Owens River Aqueduct, which brings water 338 miles from the eastern slopes of the Sierra Nevada to the City of Los Angeles. Begun in 1905, the great aqueduct was completed November 5, 1913. The Mono Craters . . . Map (db m164815) HM
17 California, Los Angeles County, Los Angeles, Sylmar — 653 — The Cascades
On November 5, 1913, 40,000 people gathered here to witness the dedication of the Los Angeles - Owens River Aqueduct. The terminus of a 233-mile long engineering marvel, the Cascades were the site of William Mulholland‘s famous speech: “There it is, . . . Map (db m165409) HM
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18 California, Los Angeles County, Pasadena, South Arroyo — Colorado Street BridgeHistoric Civil Engineering Landmark
Waddell & Harrington of Kansas City, Missouri, designed the Colorado Street Bridge in 1912. J.D.Mercereau Construction of Los Angeles was the contractor. Dedicated and opened to traffic on December 13, 1913. Designated as a Historic Civil . . . Map (db m161949) HM
19 California, Los Angeles County, Torrance, Old Torrance — Pacific Electric RailwayEl Prado Bridge
Constructed in 1913, this bridge was a part of the Pacific Electric Railway system which was designated as a Local Historic Civil Engineering Landmark by the American Society of Civil Engineers, Los Angeles section, in 1973. Although the bridge no . . . Map (db m140110) HM
20 California, Marin County, Sausalito — The Golden Gate Bridge Reported damaged
The Golden Gate Bridge is a structure of striking form and elegance. Built in 1937, it remains an indispensable link in the Bay Area's transportation network and a historical monument of civil engineering and construction. The bridge was named for . . . Map (db m102433) HM
21 California, Mono County, Lee Vining — The Tioga Pass RoadConstructed 1883 & 1910 - Commemorated 2002
Tioga Pass at 9945 feet is the highest automobile pass in California. The road to the pass was constructed in two parts. The first part was a wagon road, 56 miles long, going from Crane Flat on the west side to a silver mine on the east slope of the . . . Map (db m49970) HM
22 California, Orange County, Tustin — Marine Corps Air Station TustinBlimp Hangars
History of the Air Base from 1942 to 1949 In March 1942, the Navy Bureau of Yards and Docks contracted with Holmes & Narver Consulting Engineers of Los Angeles to design and engineer an LTA base that would accommodate the design for . . . Map (db m190132) HM
23 California, Orange County, Yorba Linda — 40 — Irrigation in Orange County
Water from the Santa Ana River was largely responsible for the transformation of this arid valley into productive agricultural land. Irrigation companies in Orange County were in operation as early as the 1860s. The two largest were the Santa Ana . . . Map (db m59529) HM
24 California, Sacramento County, Sacramento, "Old Sacramento" — Sacramento Water WorksHistoric Civil Engineering Landmark
Historic Civil Engineering Landmark Sacramento Water Works Completed in April 1854, the City of Sacramento’s water works was the first municipal, city-owned water system west of the Mississippi River. Before the municipal system was built, the . . . Map (db m224046) HM
25 California, San Bernardino County, Mentone — Henry Harbinson Sinclair1858-1914
In memory of Henry Harbinson Sinclair, 1858-1914. A testimonial to his high and useful service as a pioneer in the establishment and development of the hydro electric industry in California.Map (db m155025) HM
26 California, San Mateo County, Burlingame — 100th Anniversary of the Crystal Springs Dam
Crystal Springs Dam continues to provide the critical link in the delivery of water to the people of the San Francisco Peninsula. Centennial Observation held on this spot by joint resolution of the Column one San Mateo County Board of . . . Map (db m18447) HM
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27 California, San Mateo County, Pescadero — 930 — Pigeon Point Lighthouse
This brick lighthouse was built to incorporate a French first order Fresnel lens. Although no longer used, the lens is still operable in the lantern room. Previously the lens had been installed at Cape Hatteras, North Carolina. It first flashed over . . . Map (db m2541) HM
28 California, Santa Barbara County, Santa Barbara — Santa Barbara Mission Early Water SupplyHistoric Civil Engineering Landmark
The original water supply for the Santa Barbara Mission is an outstanding example of an early water system in Southern California. It was constructed by the Native Americans under the direction of the Franciscan Padres. Constructed in . . . Map (db m147954) HM
29 California, Yuba County, Camptonville — Lester Allen Pelton
On this spot in 1878 Lester Allen Pelton Invented the Pelton Water WheelMap (db m39820) HM
30 Colorado, La Plata County, Durango — Durango - Silverton Narrow Gauge Railroad
has been designated a Registered National Historic Landmark under the provisions of the Historic Sites Act of August 21, 1935 This site possesses exceptional value in commemorating or illustrating the history of the United . . . Map (db m160243) HM
31 Colorado, Montezuma County, Cortez — Prehistoric Mesa Verde Reservoirs
National Historic Civil Engineering Landmark [American Society of Civil Engineering 1852 Logo] Prehistoric Mesa Verde Reservoirs Mesa Verde's industrious Ancestral Puebloans designed, constructed, and maintained Morefield, . . . Map (db m58965) HM
32 Colorado, Montezuma County, Mesa Verde National Park — Far View Reservoir
Imagine this mesa top in A.D. 1150 with fields of corn, beans, and squash; supplemented with wild plants such as amaranth, tubers, and sunflowers. Children could be seen watering corn with clay water jars (ollas), and young men could be seen cutting . . . Map (db m71901) HM
33 Florida, Collier County, Naples — Bay City Walking DredgeNational Historic Mechanical Engineering Landmark — 1924 —
This walking dredge, built by the Bay City (Michigan) Dredge Works, is the earliest known survivor of its type. Designed for use over swampy terrain where wheeled or tracked vehicles would bog down the machine’s weight was distributed over shoes. To . . . Map (db m195057) HM
34 Florida, Columbia County, High Springs — Bellamy RoadFlorida Historic Civil Engineering Landmark
Near this point, the Bellamy Road crossed the Santa Fe River. The road was named for its builder, John Bellamy, a civil engineer. Approved by Congress in 1824 and completed in 1826, it was the first Federally funded road in Florida, connecting St. . . . Map (db m155320) HM
35 Florida, St. Johns County, St. Augustine, Historic District — Castillo de San MarcosNational Historic Civil Engineering Landmark
National Historic Civil Engineering Landmark. American Society of Civil Engineers, 1852. Castillo de San Marcos. ASCE 1976Map (db m127741) HM
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36 Georgia, Chatham County, Savannah, Historic District - North — City Plan of Savannah
National Historic Civil Engineering Landmark City Plan of Savannah               Presented 1978Map (db m67944) HM
37 Georgia, Chatham County, Savannah, Historic District - North — Savannah Historic District
. . . Map (db m5537) HM
38 Idaho, Kootenai County, Coeur d'Alene — The Mullan RoadMullan Road Historical Site
Between 1859 and 1862 the U.S. Army built a military wagon road between Fort Benton Montana, and Fort Walla Walla, Washington. This National Historic Civil Engineering Landmark was the first major engineered highway in the Pacific Northwest.Map (db m122863) HM
39 Illinois, Cook County, Chicago, The Loop District — Monument of the MillenniumWastewater System
[Text on the right] The ASCE presented only ten such awards worldwide, each representing the most outstanding example of Civil engineering in a particular area of infrastructure over the past century. Created in 1889, the District built canals . . . Map (db m155321) HM
40 Indiana, Franklin County, Metamora — Duck Creek Aqueduct
An aqueduct is a bridge carrying one body of water over another. The Duck Creek Aqueduct was originally built in 1843 to convey the canal over Duck Creek 16 feet below. Flood waters in 1847 destroyed the aqueduct, which was soon replaced by the . . . Map (db m55560) HM
41 Indiana, Marion County, Indianapolis, Mile Square — Historic National Road / Make History, Drive ItThe Road That Built The Nation
An Important Road The National Road is a true American icon, conceived by George Washington, authorized by Thomas Jefferson, and traveled by Abraham Lincoln. In 1806 construction of the National Road was approved by the US Congress to . . . Map (db m232658) HM
42 Kentucky, Kenton County, Covington — John A. Roebling Bridge
John A Roebling (1806-1869), pioneer civil engineer, was the designer and builder of the Covington-Cincinnati Suspension Bridge which was completed in 1866. It served as the prototype for Roebling’s design of the Brooklyn Bridge, which was complete . . . Map (db m55563) HM
43 Louisiana, Caddo Parish, Shreveport, Allendale-Lakeside — McNeill St. Pump StationHistoric Site — Shreveport —
Built 1887 as city's first waterworks. Contains original equipment in working order. Only example of its sort remaining in the United States of America, according to Smithsonian Institution. Declared a National Landmark in 1982.Map (db m140206) HM
44 Louisiana, Jefferson Parish, Elmwood — Huey P. Long Bridge, LouisianaNational Historic Civil Engineering Landmark
This structure is a combination railroad and highway bridge. Designed by the firm of Modjeski, Masters and Chase, with foundation recommendations by Dr. Karl Terzaghi. It was the first bridge to span the Mississippi River at New Orleans. The . . . Map (db m125232) HM
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45 Louisiana, Plaquemines Parish, Buras — Eads Jetties
About 18 miles below Ft. Jackson at Head of Passes, the Mississippi River branches into Southwest Pass, South Pass and Pass A Lutre before emptying into the Gulf of Mexico. As early as 1723 French colonists found navigation difficult and looked . . . Map (db m205283) HM
46 Louisiana, St. Charles Parish, Destrehan — Hale Boggs Bridge
The Outstanding Civil Engineering Achievement - 1984 Hale Boggs Bridge Awarded in a National Competition by the American Society of Civil Engineers.Map (db m109613) HM
47 Louisiana, St. Charles Parish, Luling — Hale Boggs Bridge
The Outstanding Civil Engineering Achievement - 1984 Hale Boggs Bridge Awarded in a National Competition by the American Society of Civil Engineers.Map (db m109557) HM
48 Louisiana, St. Tammany Parish, Mandeville — Lake Pontchartrain Causeway BridgeNational Historic Civil Engineering Landmark
The original 23.86 mile-long structure, which now carries the Southbound traffic, was designed by the firm of Palmer & Baker. When opened in 1956, the structure was the longest bridge in the world by more than 15 miles. In building the bridge, which . . . Map (db m99805) HM
49 Maine, Cumberland County, Cape Elizabeth — Portland Head LightNational Historic Civil Engineering Landmark
American Society of Civil Engineers 1852 Portland Head Light Portland Head Light was the first lighthouse completed and put into service by the Federal Government under the Lighthouse Act of 1789 Completed 1791 Designated 2002Map (db m161819) HM
50 Maine, Cumberland County, Harpswell — Bailey Island Bridge
Plaque 1 National Historic Civil Engineering Landmark Bailey Island Bridge Harpswell, Maine Presented 1984 Plaque 2 This 1150 ft. bridge is an exceptional engineering solution to meet unusual conditions and is the only one of . . . Map (db m108111) HM
51 Maine, Cumberland County, Naples — Songo Lock
This lock, originally built of stone masonry in 1830, was a vital link in the 50 mile long waterway from Portland Harbor to Harrison at the head of Long Lake until the advent of the railroad in 1869. At one time 100 “canal boats” were . . . Map (db m59436) HM
52 Maine, Cumberland County, Portland, East End — Portland Observatory, Portland, MaineBuilt 1807 — National Historic Civil Engineering Landmark —
One of the earliest marine signal stations in the United States, this tower is unique in its engineering design and construction and contributed to the prosperity of Portland Harbor as a vital center of maritime commerce during the "Golden Age of . . . Map (db m186397) HM
53 Maine, Penobscot County, Bangor — Bangor Water District Thomas Hill Standpipe
The Thomas Hill standpipe was designed by Ashley B. Tower of Tower and Wallace of New York and Holyoke, Mass. and built in 1897 by Major James M. Davis on land once owned by the Thomas brothers. Using a portable sawmill and blacksmith shop erected . . . Map (db m175789) HM
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54 Maryland, Baltimore County, Relay — The Thomas Viaduct
Front Commenced, July 4th, 1833. Finished, July 4th, 1835. Rear Johnathan Knight, Chief Engineer Caspar W. Wever, Superintendent of Construction. Designed by Benjamin H. Latrobe. . . . Map (db m127) HM
55 Maryland, Howard County, Savage — Bollman Iron Truss Bridge1869
Spanning the Little Patuxent River is the sole surviving example of the bridging system invented, 1850, by Wendel Bollman, Baltimore engineer. It was the first system, entirely of iron, used by the Baltimore and Ohio railroad and the first in . . . Map (db m123610) HM
56 Maryland, Montgomery County, Cabin John — Building The Cabin John Bridge
"… in our midst exists one of the most imposing and wonderful structures which engineering skill could devise …" --William T.S. Curtis, November 1, 1897, from a paper read before the Columbia Historical Society. As late as the mid-19th . . . Map (db m22636) HM
57 Maryland, Montgomery County, Dickerson — Springing Over the Monocacy / The Enduring AqueductChesapeake and Ohio Canal National Historical Park — National Park Service, U.S. Department of the Interior —
Springing Over the Monocacy Captain William McNeill of the U.S. Topographical Engineers called this aqueduct “...a work which, while it is highly ornamental, its plan and execution, ‘the true principles of economy, . . . Map (db m714) HM
58 Maryland, Prince George's County, Fort Washington — Woodrow Wilson Memorial Bridge
[Center Panel] This bridge is named in honor of Woodrow Wilson. An early automobile enthusiast, he reportedly spent an average of two hours per day riding in his automobile to relax and “loosen his mind from the problems before him.” In . . . Map (db m19756) HM
59 Massachusetts, Franklin County, Conway — Bardwells Ferry Bridge
Massachusetts Historic Civil Engineering Landmark - Bardwells Ferry Bridge - constructed in 1882.Map (db m198092) HM
60 Massachusetts, Franklin County, Gill, Riverside — 278 — Riverside Village Historic DistrictTown of Gill, Massachusetts
Riverside Village Historic District has been placed on the National Register of Historic Places in 2017 by the United States Department of the InteriorMap (db m230570) HM
61 Massachusetts, Norfolk County, Canton — Canton Viaduct
Constructed in 1835 National Register of Historic Places Placed by Canton Historical Commission Dedicated July 4th 1993 National Historic Civil Engineering Landmark Designated by the American society of Civil Engineers Dedicated . . . Map (db m52387) HM
62 Massachusetts, Norfolk County, Quincy — The Granite Railway
National Historic Civil Engineering Landmark. The Granite Railway Designated by the American Society of Civil Engineers 1976 This marker commemorates the 150th anniversary of the ground breaking for the first commercial railroad in the . . . Map (db m49466) HM
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63 Massachusetts, Plymouth County, Brockton — Brockton Railroad Viaducts and BridgesMassachusetts Historic Civil Engineering Landmark
Completed 1895 • Dedicated 1986Map (db m118210) HM
64 Massachusetts, Suffolk County, Boston, Charlestown — Dry Dock 1Boston Nat’l Hist Pk — Charlestown Navy Yard —
This stone and metal structure is Dry Dock 1, completed in 1833. As one of America’s first two granite dry docks, Dry Dock 1 made the repair of large naval ships faster, easier, and safer. Returning warships to sea duty in less time was a . . . Map (db m37697) HM
65 Michigan, Allegan County, Allegan — S549A — The Second Street Bridge
This simply ornamented wrought-iron bridge was built in 1886. It replaced an earlier wooden one that had begun to fall into disrepair. Designed by the King Iron Bridge and Manufacturing Company of Cleveland, Ohio, the double-intersection Pratt . . . Map (db m69901) HM
66 Michigan, Mackinac County, St. Ignace — Mackinac Bridge, MichiganNational Historic Civil Engineering Landmark
Designed by David B. Steinman, and representing a new level of aerodynamic stability in suspension bridges for its time, the Mackinac Bridge was the first suspension bridge to incorporate specific design features to manage the forces imposed on it . . . Map (db m105762) HM
67 Minnesota, Hennepin County, Minneapolis, Central Minneapolis — Stone Arch Bridge
"This the only one of its kind that spans the Father of Waters, and is one of the largest and most noteworthy in the United States. Firmer than the earth which supports it, it is constructed to stand the test of time." . . . Map (db m27042) HM
68 Minnesota, Hennepin County, Minneapolis, Central Minneapolis — Stone Arch Bridge - Great Northern RailwayNational Historic Civil Engineering Landmark
The Stone Arch Bridge of the Burlington Northern Railway is acknowledged to be one of the finest stone viaducts in the world, due to its massive masonry, lofty arches, and graceful curvature. Constructed: 1882-1883Map (db m152946)
69 Minnesota, Hennepin County, Minneapolis, Saint Anthony Main — The Stone Arch Bridge — Saint Anthony Falls Heritage Trail —
In 1879 St. Paul railroad magnate James J. Hill opened his "Manitoba line" to the Canadian border, linking the wheat fields of the Red River Valley with the flour mills of Minneapolis. To improve railroad access at the falls he built this 2,100-foot . . . Map (db m21031) HM
70 Missouri, St. Louis, Downtown — The Gateway ArchJefferson National Expansion Memorial
Dedicated to the People of the United States May 25, 1968 Lyndon B. Johnson President of the United States The City of St. Louis Missouri The United States Territorial Expansion Memorial Committee [The Gateway Arch was . . . Map (db m26866) HM
71 Missouri, St. Louis, Downtown West — Union Station
has been designated a National Historic Landmark This site possesses national significance in commemorating the history of the United States of America ——————— [Markers on interior . . . Map (db m62210) HM
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72 Missouri, St. Louis, Forest Park — River Des Peres Sewage and Drainage Works
[Top plaque:] The River Des Peres Sewage and Drainage Works extends 14 miles from the city limits northwest to Delmar and Skinker to the Mississippi River south of the city. Four miles of massive, enclosed reinforced concrete sewers . . . Map (db m141182) HM
73 Missouri, St. Louis County, Kirkwood — Remembering the Achievements of James P. KirkwoodMarch 27, 1807 - April 22, 1877 — Co-Founder (1852) and Second President (1867-1868) of the American Society of Civil Engineers —
James Pugh Kirkwood was born in Edinburgh, Scotland. He came to the United States in 1832 and was appointed Resident Engineer for the Western Railway of Massachusetts, and later the Long Island Railroad. He won recognition for the rapid . . . Map (db m140854) HM
74 Montana, Chouteau County, Fort Benton — Mullan Wagon Road
Captain John Mullan started surveying the Mullen Road in 1853 and began construction in 1859 of the 624-mile wagon road that linked Fort Benton to the head of navigation on the Columbia. Indian wars slowed him somewhat, but Mullan opened his route . . . Map (db m142246) HM
75 Nevada, Clark County, Boulder City — Civil Engineering Monument of the MillenniumHoover Dam
One of the finest examples of how civil engineering ingenuity shaped the development of society's quality of life in the 20th century.Map (db m31900) HM
76 Nevada, Clark County, Boulder City — Hoover Dam
A modern civil engineering wonder of the United States One of seven selected by the American Society of Civil Engineers 1955Map (db m13436) HM
77 Nevada, Storey County, Virginia City — 14 — Virginia & Gold Hill Water CompanyComstock Historical Marker No. 14 — 130 South B St., Virginia, City, NV —
Following the discovery of silver and gold, the miners obtained their water from the small streams or from the springs located in the canyons such as Ophir Ravine, in Virginis City, and Bullion and Crown Point ravines above Gold Hill. Originally . . . Map (db m35942) HM
78 New Hampshire, Hillsborough County, Hillsborough — 203 — Stone Arch Bridges
Beginning in the 1830's, a few arched granite highway bridges were built in southern New Hampshire under the supervision of engineers from major manufacturing centers. By the 1850's, rural stonemasons had mastered the art of building such bridges . . . Map (db m97139) HM
79 New Hampshire, Sullivan County, Cornish — 158 — Cornish-Windsor Bridge
Built in 1866 at a cost of $9,000, this is the longest wooden bridge in the United States and the longest two-span covered bridge in the world. The fourth bridge at this site, the 460-foot structure was built by Bela J. Fletcher (1811-1877) of . . . Map (db m74586) HM
80 New Jersey, Passaic County, Paterson — Great Falls Raceway and Power SystemNational Historic Civil and Mechanical Engineering Landmark
Alexander Hamilton, with great vision, prompted the incorporation of the "society for establishing usefull [sic] manufactures" in 1791 to start America's economic and industrial independence. Pierre Charles L'Enfant, engineer and planner of the . . . Map (db m64189) HM
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81 New Jersey, Sussex County, Stanhope — Morris CanalNational Historic Civil Engineering Landmark
The hydraulic–powered inclined plane system of the Morris Canal.Map (db m99035) HM
82 New Mexico, Sierra County, Truth or Consequences — Elephant Butte Dam
Pueblo Indians irrigated and farmed the Rio Grande Valley for several hundred years before the Spaniards arrived and continued the tradition. Built between 1910-1916, Elephant Butte Dam when completed was the world's largest irrigation reservoir. It . . . Map (db m45125) HM
83 New Mexico, Taos County, Dixon — Rio Grande Gaging StationU.S. Geological Survey — Established 1889 —
First Gaging Station established by U.S. Geological SurveyMap (db m45113) HM
84 New York, Dutchess County, Poughkeepsie — Poughkeepsie-Highland BridgeNational Historic Civil Engineering Landmark
The Poughkeepsie-Highland Bridge is the oldest surviving steel cantilever bridge in the world, and when built, had the longest truss and cantilever spans. The bridge provided the first, and only, all-rail route across the Husdon River south of . . . Map (db m35483) HM
85 New York, Erie County, Buffalo, First Ward — The Cargill Superior ElevatorThe Industrial Heritage Trail
Image Source: Historic American Engineering Record. Jet Lowe, photographer, 1990. The Superior Elevator, as it was originally known, was built in 1915 by the Monarch Engineering Company for the Husted Milling Company. A.E. Baxter was the . . . Map (db m85961) HM
86 New York, Kings County, Brooklyn, Fulton Ferry District — The Brooklyn Bridge1867 - 1883
The Brooklyn Bridge, the largest suspension bridge in the world at the time it was built, was the first to span the East River. Designed and constructed by John A. Roebling and his son, Washington A. Roebling, the bridge spans 3,461 feet and rises . . . Map (db m130437) HM
87 New York, Kings County, Brooklyn, Fulton Ferry District — The Builders of the Bridge
Dedicated to the memory of Emily Warren Roebling 1843-1903 whose faith and courage helped her stricken husband Col. Washington A. Roebling, C.E. 1837-1926 complete the construction of this bridge from the plans of his father John A. Roebling, C.E. . . . Map (db m134185) HM
88 New York, Monroe County, Rochester, Downtown — Erie CanalNational Historic Civil Engineering Landmark
Begun at Rome, N.Y., July 4, 1817 - Completed 1825. Benjamin Wright (1770-1842) Chief Engineer.Map (db m63996) HM
89 New York, Monroe County, Rochester, Downtown — Second Erie Canal Aqueduct
Second Erie Canal Aqueduct Over Genesee River - Lower Level completed in 1842 Outstanding example of Erie Canal Construction and engineering Built in conjunction with the first major improvement and enlargement of the canal Nathan S. . . . Map (db m63995) HM
90 New York, New York County, Manhattan, Civic Center — The Rotunda
A small domed Roman-style building named the Rotunda stood on this site 1813-1870. It was the city’s first art museum and was erected to display panoramas painted by the artist, John Vanderlyn. At times the structure housed a Post Office, courts . . . Map (db m47325) HM
91 New York, New York County, Manhattan, Hudson Square — Holland TunnelNational Historic Civil And Mechanical Engineering Landmark — Constructed 1920-1927 —
The first long mechanically ventilated underwater tunnel in the world designed for motor vehicle use The 29.5 ft. diameter 3,500 ft. long twin tubes of this tunnel were shield driven by the pneumatic method through extremely difficult river . . . Map (db m236059) HM
92 New York, New York County, Manhattan, Lenox Hill — Queensboro Bridge, New YorkNational Historic Civil Engineering Landmark — American Society of Civil Engineers, 1852 —
The Queensboro Bridge was the longest cantilever span in North America (1,182 feet) from 1909 until the Quebec Bridge opened in 1917 and the longest in the United States until 1930. Many engineers, including R.S. Buck and Gustav Lindenthal, along . . . Map (db m168775) HM
93 New York, New York County, Manhattan, Liberty Island — The New ColossusA Sonnet to the Statue of Liberty
Not like the brazen giant of Greek fame, with conquering limbs astride from land to land; here at our sea-washed, sunset gates shall stand a mighty woman with a torch, whose flame is the imprisoned lightning, and her name Mother of Exiles. From her . . . Map (db m149136) HM
94 New York, New York County, Manhattan, Lower East Side — Williamsburg Bridge, New YorkCompleted: 1903 Designated: 2009 — National Historic Civil Engineering Landmark —
Designed by Leffert Lefferts Buck, prolific bridge engineer of the post-Civil War period, the Williamsburg Bridge's 1,600-foot main span was the longest in the world from 1903 until 1924. With 40-foot deep stiffening trusses, it was the first . . . Map (db m226344) HM
95 New York, Niagara County, Lockport — 7 — Lock Construction
From the original Erie Canal to the Barge Canal System, crossing the Niagara Escarpment posed immense challenges to canal engineers. The first Lockport locks were designed by Nathan Roberts, who was in charge of constructing the Erie Canal from . . . Map (db m76954) HM
96 New York, Niagara County, Lockport — Lockport LocksErected August 16, 1975
In commemoration of the 150th anniversary of the completion of the original locks which opened a connecting waterway between the Hudson River and the Great Lakes. This completion of the Erie Canal was the opening of a door to the settling of the . . . Map (db m65659) HM
97 New York, Niagara County, Niagara Falls — Bridges of NiagaraInternational Historic Civil Engineering Landmark
Since 1848 many bridges have spanned the Niagara Gorge below Niagara Falls. The design and construction of these bridges was necessary for the economic development of the Niagara Falls area. The demand for safe and convenient crossings was easily . . . Map (db m72386) HM
98 New York, Orange County, West Point — U. S. Military AcademyNational Historic Civil Engineering Landmark
The oldest extant institution in the United States to offer formal academic instruction in the field of civil engineering (Sept. 1813).Map (db m35349) HM
99 New York, Rockland County, Bear Mountain — Bear Mountain Bridge
Bear Mountain Bridge The first highway bridge to span the Hudson River south of Albany Begun March 24th 1923 – Opened Nov. 27th 1924 To all who With thought labor and loyalty have Contributed to the construction of This bridge and . . . Map (db m48083) HM
100 New York, Saratoga County, Waterford — Flight of Five Locks
National Historic Civil Engineering Landmark American Society of Civil Engineers 1852 Flight of Five Locks - New York State Barge Canal The Greatest Series of High Lift Locks In The Shortest Distance Of Any Canal In The United . . . Map (db m58539) HM

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Dec. 7, 2023