1 ► Idaho, Adams County, Council — 420 — Old Railroads —

On U.S. 95 at milepost 136 at Illinois Avenue, on the right when traveling north on U.S. 95.

2 ► Idaho, Bannock County, Arimo — 329 — Oneida Station —

On Henderson Road at High Street, on the left when traveling south on Henderson Road.

3 ► Idaho, Bannock County, Inkom — 17 — Idaho's 1st Railroad —

On Old Highway 91 (Grant Road) near Old Highway 30 West (Business Interstate 15), on the left when traveling north.

4 ► Idaho, Bannock County, McCammon — 560 — McCammon Railroad Center —

On Center Street near 7th Street, on the left when traveling south.

5 ► Idaho, Bannock County, Pocatello — The City of Pocatello — Chief Pocatello Monument —

On South 5th Avenue at South 4th Avenue (U.S. 30), on the left when traveling north on South 5th Avenue.

6 ► Idaho, Bannock County, Pocatello — 291 — Utah & Northern Railroad —

On 5th Avenue near East Terry Street, on the right when traveling west.

7 ► Idaho, Bear Lake County, Montpelier — 8 — A Strong Building, Stock Chevys and Railroad — Montpelier Historic Downtown Walking Tour —

On Washington Street (U.S. 89) near North 10th Street, on the right when traveling west.

8 ► Idaho, Bear Lake County, Ovid — Bear Lake County Transit —

On Ovid Road (U.S. 89) at State Highway 36, in the median on Ovid Road.

9 ► Idaho, Bear Lake County, Ovid — Overland Emigration Routes —

On Ovid Road (Highway 89) at State Highway 36, in the median on Ovid Road.

10 ► Idaho, Benewah County, Plummer — Hnpetptqwe'n Wayside — "Place for Racing" —

Near Trail of the Coeur d'Alenes.

11 ► Idaho, Benewah County, St. Maries — St. Maries - Steaming with History —

On Main Avenue near North Sixth Street (State Highway 5), on the right when traveling east.

12 ► Idaho, Bingham County, Basalt — 373 — Cedar Point - Basalt —

On 675 East Street near 825 North, on the left when traveling north.

13 ► Idaho, Blaine County, Ketchum — 329 — Ski Lifts —

On State Highway 75 at milepost 131 near West Sage Road, on the right when traveling south.

14 ► Idaho, Bonner County, Oldtown — Albeni Falls —

Near U.S. 2, 3 miles east of Le Clerc Road, on the right when traveling east.

15 ► Idaho, Boundary County, Bonners Ferry — A Town is Born Along the Way —

Near Main Street near Riverside Street, on the right when traveling north.

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16 ► Idaho, Boundary County, Bonners Ferry — Great Northern Railway 1892 — 1892 —

On Main Street near Riverside Street, on the right when traveling north.

17 ► Idaho, Boundary County, Bonners Ferry — Kootenai Valley Railway — 1899-1971 —

On Main Street near Riverside Street.

18 ► Idaho, Boundary County, Bonners Ferry — Logging Railroads —

Near Main Street near Riverside Street, on the right when traveling north.

19 ► Idaho, Boundary County, Bonners Ferry — Railroad Laborers —

Near Main Street near Riverside Street, on the right when traveling north.

20 ► Idaho, Boundary County, Bonners Ferry — Railroad Services —

Near Main Street near Riverside Street, on the right when traveling north.

21 ► Idaho, Boundary County, Bonners Ferry — Semaphores —

On Main Street near Riverside Street.

22 ► Idaho, Boundary County, Bonners Ferry — Spokane International Railway — The Corbin Road 1906 —

Near Main Street near Riverside Street, on the right when traveling north.

23 ► Idaho, Canyon County, Caldwell — Caldwell Train Depot —

Near Main Street near South 7th Avenue, on the right when traveling north.

24 ► Idaho, Canyon County, Melba — Guffey Bridge Snake River Idaho —

Near Sinker Road.

25 ► Idaho, Caribou County, Soda Springs — Memories of Conda - a company community —

On East 2nd Street South (U.S. 30) near South Main Street, on the right when traveling west.

26 ► Idaho, Caribou County, Soda Springs — The Dinkey Engine —

On South Main Street near West Center Street, on the left when traveling south.

27 ► Idaho, Caribou County, Soda Springs — Travertine Terraces - World Famous Water —

Near South Main Street.

28 ► Idaho, Clark County, Spencer — 222 — Beaver Canyon —

Near West Camas Creek Road (Forest Road 006) near Interstate 15, on the left when traveling east.

29 ► Idaho, Clearwater County, Lenore — 486 — Lenore Tram —

On U.S. 12 at Summit Grade, on the left when traveling west on U.S. 12.

30 ► Idaho, Clearwater County, Orofino — Routes Through the Region —

Near Riverside Avenue near Dent Bridge Road / Brown Avenue, on the left when traveling north.

31 ► Idaho, Custer County, Challis — Tollgate Station —

On Custer Motorway Adventure Road - Mill Creek Road (Forest Road 070), on the left when traveling west.

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32 ► Idaho, Elmore County, Glenns Ferry — Glenn's Ferry —

On South Commerical Street at West Madison Avenue, on the left when traveling south on South Commerical Street.

33 ► Idaho, Elmore County, Mountain Home — Mountain Home Arrives in a 50-pound Soapbox —

On North Main Street/Old U.S. 30 at American Legion Boulevard on North Main Street/Old U.S. 30.

34 ► Idaho, Elmore County, Mountain Home — 195 — Rattlesnake Station —

On Sun Valley Highway (U.S. 20 at milepost 102.7) north of Industrial Way, on the left when traveling south.

35 ► Idaho, Franklin County, Preston — 257 — Utah & Northern Railway —

On Highway 91 (U.S. 91 at milepost 13.2) near Hot Springs Road, on the right when traveling north.

36 ► Idaho, Idaho County, White Bird — 298 — Salmon River —

On U.S. 95 at Old White Bird Hill Road, on the right when traveling north on U.S. 95.

37 ► Idaho, Latah County, Potlatch — 505 — Company Town —

On State Highway 6 at Onaway Road, on the left when traveling west on State Highway 6.

38 ► Idaho, Latah County, Potlatch — White Pine Scenic Byway —

On State Highway 6 at Travis Road, on the left when traveling west on State Highway 6.

39 ► Idaho, Latah County, Potlatch — 504 — World's Largest Mill —

On State Highway 6 at Onaway Road, on the left when traveling west on State Highway 6.

40 ► Idaho, Lewis County, Craigmont — 371 — Railroad Trestles —

On U.S. 95 at milepost 268 near Evergreen Road, on the left when traveling north.

41 ► Idaho, Lewis County, Winchester — 419 — Railroad Tunnels —

On U.S. 95 at milepost 286, on the left when traveling north.

42 ► Idaho, Lincoln County, Shoshone — 412 — Shoshone Historic District — South Central Idaho’s rail center since 1882, when trains reached here. — Shoshone has a historic district of unusual interest. —

On U.S. 93, 0.2 miles south of State Highway 24, on the right when traveling north.

43 ► Idaho, Nez Perce County, Lapwai — Coming of the Railroad —

On Watson's Store Road near 403 Road, on the right when traveling north.

44 ► Idaho, Shoshone County, Avery — "In the Hole" —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

45 ► Idaho, Shoshone County, Avery — “Wintering” Roland —

Near Cliff Creek Road (Federal Road 506) 3.7 miles north of Loop Creek Road (Federal Road 326).

46 ► Idaho, Shoshone County, Avery — A Changing Landscape —

Near Cliff Creek Road (Federal Road 506) 2.6 miles north of Loop Creek Road (Federal Road 326).

47 ► Idaho, Shoshone County, Avery — Beast of the Bitterroots —

Near Cliff Creek Road (Federal Road 506) 4 miles north of Loop Creek Road (Federal Road 326).

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48 ► Idaho, Shoshone County, Avery — Bridging the Gaps —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

49 ► Idaho, Shoshone County, Avery — Bumps on the Milwaukee Road —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

50 ► Idaho, Shoshone County, Avery — Busy Bogle Spur —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

51 ► Idaho, Shoshone County, Avery — Electrified —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

52 ► Idaho, Shoshone County, Avery — Johnson’s Big Cut —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

53 ► Idaho, Shoshone County, Avery — Laboring in Luxury —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

54 ► Idaho, Shoshone County, Avery — Little in Name Only —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

55 ► Idaho, Shoshone County, Avery — Man’s Mark on the Land —

Near Cliff Creek Road (Federal Road 506) 2.6 miles north of Loop Creek Road (Federal Road 326).

56 ► Idaho, Shoshone County, Avery — Milwaukee Road Muscle —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Route 506).

57 ► Idaho, Shoshone County, Avery — Mountains of Copper? —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

58 ► Idaho, Shoshone County, Avery — No One’s “Fault” —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

59 ► Idaho, Shoshone County, Avery — Not So "Lucky" Swedes —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

60 ► Idaho, Shoshone County, Avery — Olympian Luxury —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

61 ► Idaho, Shoshone County, Avery — Railroad at WAR! —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

62 ► Idaho, Shoshone County, Avery — Rough & Tumble Camps —

Near Cliff Creek Road (Federal Road 506) 4 miles north of Loop Creek Road (Federal Road 326).

63 ► Idaho, Shoshone County, Avery — Rough Roads & Wrecks —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

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64 ► Idaho, Shoshone County, Avery — Secluded Falcon —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

65 ► Idaho, Shoshone County, Avery — Section Gangs —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

66 ► Idaho, Shoshone County, Avery — Signs, Wires & Whistles —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

67 ► Idaho, Shoshone County, Avery — Smooth as Silk —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

68 ► Idaho, Shoshone County, Avery — Temporary Trestles —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

69 ► Idaho, Shoshone County, Avery — The 1910 Fires —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

70 ► Idaho, Shoshone County, Avery — The Big Blowup —

Near Cliff Creek Road (Federal Road 506) near Loop Creek Road (Federal Road 326).

71 ► Idaho, Shoshone County, Avery — The End of the Road? —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

72 ► Idaho, Shoshone County, Avery — The Mighty Quills —

Near Loop Creek Road (Federal Road 506) 4 miles west of Cliff Creek Road (Federal Road 326).

73 ► Idaho, Shoshone County, Avery — The Olympian Hiawatha —

Near Loop Creek Road (Federal Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

74 ► Idaho, Shoshone County, Avery — The Route of the Hiawatha —

Near Cliff Creek Road (Federal Road 506) 3.7 miles north of Loop Creek Road (Route 326).

75 ► Idaho, Shoshone County, Avery — The Route of the Hiawatha —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

76 ► Idaho, Shoshone County, Avery — The Toughest Town —

Near Moon Pass Road, 0.4 miles south of Loop Creek Road (Federal Road 326).

77 ► Idaho, Shoshone County, Avery — The Traveler —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road.

78 ► Idaho, Shoshone County, Avery — This Place Had a Name? —

Near Loop Creek Road (Road 326) 4 miles west of Cliff Creek Road (Federal Road 506).

79 ► Idaho, Shoshone County, Avery — Tunneling Toward Tacoma —

Near Cliff Creek Road (Federal Road 506) 1.8 miles north of Loop Creek Road (Federal Road 326).

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80 ► Idaho, Shoshone County, Avery — Water Does the Work! —

Near Cliff Creek Road (Federal Road 506) 2.6 miles north of Loop Creek Road (Federal Road 326).

81 ► Idaho, Shoshone County, Avery — World Class Workers —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

82 ► Idaho, Shoshone County, Avery — You want to be a Ranger? —

Near Moon Pass Road (Federal Road 456) 0.4 miles south of Loop Creek Road (Federal Road 326).

83 ► Idaho, Shoshone County, Mullan — 373 — Willow Creek Slide —

On Interstate 90, 7.9 miles east of Exit 69 at Mullan, on the right.

84 ► Idaho, Washington County, Cambridge — 378 — Seven Devils Mines —

On State Highway 71 at milepost 2,, 10 miles west of Camp Creek Road, on the left when traveling north.