101 ► New York, Rockland County, Bear Mountain — Bear Mountain Bridge —

On U.S. 202, 0.2 miles east of U.S. 9W, on the right when traveling east.

102 ► New York, Saratoga County, Waterford — Flight of Five Locks —

103 ► New York, Saratoga County, Waterford — Waterford Bridges — National Historic Civil Engineering Landmark —

On Broad Street (New York State Route 4), on the right when traveling east.

104 ► New York, Schoharie County, North Blenheim — Old Blenheim Bridge —

On Eastside Road, on the right when traveling south.

105 ► North Carolina, Avery County, Linville — Linn Cove Viaduct —

Near Blue Ridge Parkway (at milepost 304.4), 1 mile north of Blowing Rock Highway (U.S. 221).

106 ► North Carolina, Camden County, Camden, South Hills — Dismal Swamp Canal — 2362 Highway 17 —

On McPherson Road (State Highway 1231) 0.1 miles west of U.S. 17, on the right when traveling south.

107 ► North Dakota, Barnes County, Valley City — High Above the Sheyenne — High Line Bridge —

Near 12th Street Northeast, 0.2 miles east of 6th Avenue Northeast (Chautauqua Boulevard), on the left when traveling east.

108 ► North Dakota, Barnes County, Valley City — Northern Pacific High Line Bridge No. 64 — National Historic Civil Engineering Landmark —

Near 12th Street Northeast, 0.2 miles east of 6th Avenue Northeast (Chautauqua Boulevard), on the left when traveling east.

109 ► Ohio, Gallia County, Gallipolis — Silver Bridge Collapse and Creation of National Bridge Inspection Standards (NBIS) — Point Pleasant, West Virginia — National Historic Civil Engineering Landmark —

On Ohio River Scenic Byway (Ohio Route 7) 0.2 miles north of Georges Creek Road (County Road 7), on the right when traveling north.

110 ► Ohio, Hamilton County, Cincinnati — 26-31 — Cincinnati Union Terminal —

111 ► Ohio, Logan County, Bellefontaine — First Concrete Pavement — National Historic Civil Engineering Landmark —

On East Court Avenue at South Main Street, on the left when traveling east on East Court Avenue.

112 ► Ohio, Lucas County, Toledo, Southside — Don't Let This Bridge Leave You In Suspense! —

Near Middleground Metropark east of Ottawa Street.

113 ► Ohio, Montgomery County, Vandalia — The Miami Conservancy District —

On W National Rd (U.S. 40) at Aullwood Road, on the left when traveling east on W National Rd.

114 ► Ohio, Morgan County, Rokeby Lock — Muskingum River Navigation System — National Historic Civil Engineering Landmark —

Near Ohio Route 60 near Greer Road.

115 ► Ohio, Summit County, Akron — 29-77 — Airdock —

On Triplett Boulevard (Ohio Route 241), on the right when traveling east.

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116 ► Oregon, Curry County, Gold Beach — Patterson Bridge — Rogue River Bridge —

On Harbor Way west of Oregon Coast Highway (U.S. 101), on the right when traveling west.

117 ► Pennsylvania, Blair County, Altoona, Logan Township — Horseshoe Curve — National Historic Engineering Landmark —

On Veterans Memorial Highway, on the right when traveling west.

118 ► Pennsylvania, Cambria County, Allegheny Portage Railroad National Historic Site — Allegheny Portage Railroad —

119 ► Pennsylvania, Fayette County, Brownsville — Dunlap’s Creek Bridge —

On Market Street east of Bank Street, on the right when traveling east.

120 ► Pennsylvania, Fulton County, Waterfall — Blue Star Memorial Highway —

121 ► Pennsylvania, Lebanon County, Lebanon — Union Canal Tunnel —

On Tunnel Hill Road (Pennsylvania Route 4001).

122 ► Pennsylvania, Lehigh County, Bethlehem — Waterworks — 1762 —

123 ► Pennsylvania, McKean County, Mount Jewett — Commerce to Collapse —

Near Viaduct Road near Lindholm Road (County Route 3011).

124 ► Pennsylvania, McKean County, Mount Jewett — Kinzua Viaduct —

Near Pennsylvania Route 3011, 0.5 miles east of U.S. 6.

125 ► Pennsylvania, Northampton County, Easton — Connecting Communities Across the Delaware River — Karl Stirner Arts Trail — City of Easton, Pennsylvania —

On Larry Holmes Drive (Pennsylvania Route 611) at Northampton Street, on the right when traveling north on Larry Holmes Drive.

126 ► Pennsylvania, Philadelphia County, Philadelphia, Fairmount Park — Philadelphia Municipal Water System — Fairmount Water Works 1815 - 1911 — National Historic Civil Engineering Landmark —

On Schuylkill River Trail, 0.1 miles south of Waterworks Drive, on the right when traveling south.

127 ► Pennsylvania, Philadelphia County, Philadelphia, Fairmount Park — Rebirth & Renewal —

On Schuylkill River Trail, 0.1 miles south of Waterworks Drive, on the right when traveling south.

128 ► Pennsylvania, Philadelphia County, Philadelphia, Logan Square — The City Plan of Philadelphia —

On Benjamin Franklin Parkway at Race Street on Benjamin Franklin Parkway.

129 ► Pennsylvania, Philadelphia County, Philadelphia, William Penn Annex West — Philadelphia City Hall — National Historic Civil Engineering Landmark —

Near Germantown Avenue.

130 ► Pennsylvania, Philadelphia County, Philadelphia, William Penn Annex West — Philadelphia Municipal Water System — 1801 - 1815 — National Historic Civil Engineering Landmark —

Near John F Kennedy Boulevard (Route 611) at North Broad Street (Pennsylvania Route 611), on the right when traveling east.

131 ► Pennsylvania, Susquehanna County, Lanesboro — Starrucca Viaduct —

On Main Street at Grove Street on Main Street.

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132 ► Pennsylvania, Susquehanna County, Lanesboro — Starrucca Viaduct - The Bridge of Stone —

On Depot Street east of Starrucca Viaduct, on the right when traveling east.

133 ► Pennsylvania, Wyoming County, Nicholson — Tunkhannock Viaduct — AKA Nicholson Bridge — National Historic Civil Engineering Landmark —

On State Street (Pennsylvania Route 92) 0.2 miles east of Lackawanna Trail (U.S. 11), on the right when traveling east.

134 ► South Carolina, Bamberg County, Bamberg — Bamberg —

On East Railroad Avenue near North Street, on the right when traveling west.

135 ► South Carolina, Charleston County, Charleston, Wraggborough — William Aiken House —

On King Street near Ann Street, on the left when traveling south.

136 ► South Dakota, Brule County, Chamberlain — Missouri River Bridges of South Dakota — National Historic Civil Engineering Landmark —

Near Interstate 90 at milepost 263.

137 ► South Dakota, Lawrence County, Deadwood — Black Hills Railroads — Historic South Dakota Civil Engineering Landmark —

Near Siever Street north of Pine Street, on the left when traveling north.

138 ► South Dakota, Minnehaha County, Sioux Falls, North End East — First Concrete State Highway — South Dakota Historic Civil Engineering Landmark —

On North Drive, 0.1 miles east of 1st Avenue.

139 ► Tennessee, Davidson County, Nashville, North Capitol — Tennessee State Capitol — National Historic Civil Engineering Landmark —

On Charlotte Avenue just west of 6th Avenue North, on the right when traveling west.

140 ► Tennessee, Davidson County, Nashville, North Capitol — 3A 34 — Tennessee State Capitol —

On 600 Charlotte Avenue.

141 ► Texas, Bexar County, San Antonio, Downtown — San Antonio's River Walk and Flood Control System —

142 ► Texas, Bexar County, San Antonio, Hemisfair — 78 — Acequia Madre de Valero —

Near East Nueva Street north of Hemisfair Boulevard, on the left when traveling north.

143 ► Texas, El Paso County, El Paso — 12851 — Bataan Memorial Trainway —

On West San Francisco Avenue, on the left when traveling east.

144 ► Texas, Galveston County, Galveston — Galveston Seawall and Grade Raising — National Historic Civil Engineering Landmark — American Society of Civil Engineers 1852 —

Near Seawall Boulevard, 0.3 miles east of 53rd Street, on the right when traveling east.

145 ► Texas, Nueces County, Corpus Christi — 18252 — 1941 Corpus Christi Seawall —

On North Shoreline Boulevard at Schatzell Street, on the right when traveling north on North Shoreline Boulevard.

146 ► Texas, Panola County, Carthage — International Boundary Marker — Republic of Texas-United States — Historic Civil Engineering Landmark —

Near Farm to Market Road 31, 0.4 miles south of County Road 4557, on the right when traveling north.

147 ► Utah, Box Elder County, Promontory Summit — Golden Spike — National Historic Site —

On North 22300th Street West, on the right when traveling south.

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148 ► Utah, Washington County, Springdale — Zion Mt. Carmel Tunnel and Highway, Utah — National Historic Civil Engineering Landmark —

On Zion Park Boulevard, 0.2 miles east of Zion Canyon Scenic Drive, on the right when traveling east.

149 ► Virginia, Fairfax County, McLean — Great Falls Canal and Locks —

Near Old Dominion Drive at Georgetown Pike (Virginia Route 193).

150 ► Virginia, Lynchburg, Riverside — Fink Deck Truss — National Historic Civil Engineering Landmark —

Near Riverside Street, 0.1 miles north of Rivermont Avenue.

151 ► Virginia, Nelson County, Afton — Crozet Blue Ridge Tunnel — National Historic Civil Engineering Landmark —

On Blue Ridge Tunnel Trail, 0.6 miles west of Afton Depot Lane, on the right when traveling west.

152 ► Virginia, Portsmouth, Hope Village — Norfolk Naval Shipyard — “Dry Dock 1” — Path of History Portsmouth, VA —

Near Lincoln Street east of 3rd Street, on the left when traveling east.

153 ► West Virginia, Berkeley County, Martinsburg — Baltimore and Ohio Railroad Shop Complex —

On East Race Street east of North Spring Street, on the left when traveling east.

154 ► West Virginia, Berkeley County, Martinsburg — Baltimore and Ohio Roundhouse and Shop Complex —

On East Race Street east of North Spring Street, on the left when traveling east.

155 ► West Virginia, Mason County, Point Pleasant — Silver Bridge Collapse and Creation of National Bridge Inspection Standards (NBIS) — Point Pleasant, West Virginia — National Historic Civil Engineering Landmark —

Near Main Street at 6th Street, on the left when traveling north.

156 ► West Virginia, Ohio County, Wheeling — Wheeling Suspension Bridge - 1849 — Historic National Road —

On 10th Street west of Main Street (U.S. 40), on the left when traveling west.

157 ► Wisconsin, Milwaukee County, Milwaukee, Historic Third Ward — 18 — Hoffmann & Sons Co. Grocers — Historic Third Ward —

On East Buffalo Street at North Water Street, on the right when traveling east on East Buffalo Street.

158 ► Wisconsin, Outagamie County, Appleton — First Edison Hydroelectric System in America —

Near South Lawe Street, on the right when traveling south.

159 ► Wyoming, Park County, Cody — Buffalo Bill Dam —

On North Fork Hwy (U.S. 14) 1.3 miles east of Verner Road, on the right when traveling east.

160 ► British Columbia, Peace River, Dawson Creek — Alaska Highway / La Route De L’Alaska — Completed in 1942 / Terminé en 1942 — International Historic Civil Engineering Landmark / Monument Historique International du Génie Civil —

On Alaska Ave (National Highway 2) near 8th Street, in the median.

161 ► Québec, Communauté-Urbaine-de-Québec, Québec, Saint-Louis — The Québec Bridge — Le pont Québec —

Near Boulevard Laurier (Québec Route 175).

162 ► Mexico, Querétaro, Santiago de Querétaro — The Aqueduct of Querétaro —

On Calle Ejército Repúblicano just south of Calle San Gremal, on the left when traveling west.

163 ► United Kingdom, Scotland, Edinburgh, South Queensferry — The Forth Rail Bridge —

On B924.

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164 ► United Kingdom, Scotland, Falkirk — Forth & Clyde Ship Canal — International Historic Civil Engineering Landmark —

Near Lime Road.

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