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Idaho

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Abstein Lane Bridge (Valley County, Idaho)
Built 1920; rehabilitated 1981
Pony truss bridge over E.Fork. of S.Fk.Salmon River on Abstein Lane
Open to traffic

Agatha Creek Trestle (Shoshone County, Idaho)
Built 1912; rehabilitated 1991
Wooden bridge over Agatha Creek on Potlatch Road
Open to traffic

Alder Creek Road Bridge (Boise County, Idaho)
Built 1924; rehabilitated 1956
Through truss bridge over South Fork Payette River on Alder Creek Road
Open to traffic

Anderson Canal Bridge (Bonneville County, Idaho)
Built 1933
Wooden bridge over Anderson Canal on STC 6859
Open to traffic

Arrow Junction Bridge (Nez Perce County, Idaho)
Built 1920
Through truss bridge over Potlatch River on Highline Arrow Road
Open to traffic

Arrowrock Dam Spillway Bridge (Boise County, Idaho)
Built 1914; Installed 1915; Bypassed in function 2003
Through truss bridge over Arrowrock Dam Spillway on Old Arrowrock Dam Road
Intact but closed to all traffic

Ashton-Tetonia Trail - Bitch Creek Trestle (Fremont County, Idaho)
built 1924, rail line abandoned 1984, opened to pedestrians in 2010
Deck plate girder bridge over Bitch Creek on Ashton-Tetonia Trail
Open to pedestrians only

Ashton-Tetonia Trail - Conant Creek Trestle (Fremont County, Idaho)
Built 1894 at American Falls; dismantled 1911; relocated here 1914
Three-span Pegram deck truss bridge over Conant Creek
Open to pedestrians only as part of Ashton-Tetonia Trail

Ashton-Tetonia Trail - Fall River Trestle (Fremont County, Idaho)
Pratt deck truss bridge over Fall River on Ashton-Tetonia Trail
Open to pedestrians only

Avery Bridge (Shoshone County, Idaho)
Built 1935
Deck truss bridge over St. Joe River on Siberts Old River Road
Open to traffic

Barracks Lane Bridge (Lemhi County, Idaho)
Built 1930; rehabilitated 1987
Through truss bridge over Lemhi River on Barracks Lane
Open to traffic

Bear Lake Outlet Canal Bridge (Bear Lake County, Idaho)
Built 1930, replaced unknown year
Lost Through truss bridge over Bear Lake Outlet Canal on Dingle Bottoms Road
Replaced

Bear River Bridge (Bear Lake County, Idaho)
Built 1921
Through truss bridge over Bear River on Narrows Road west of Georgetown
Open, replaced by new bridge

Bear River Bridge (Franklin County, Idaho)
Built 1911; rehabilitated 1936
Through truss bridge over Bear River on Oneida Narrows Road
Open to traffic

Bear River Bridge (Franklin County, Idaho)
Built 1931
Polygonal Warren pony truss bridge over Bear River on East Riverdale Road
Open to traffic

Beauty Creek Bridge (Kootenai County, Idaho)
Built 1939; replaced by UCEB 2009
Lost wooden bridge over Beauty Creek on ID 97
Replaced by a new bridge

Bernard Pack Suspension Bridge (Valley County, Idaho)
Built 1957
Wire suspension bridge over Middle Fork Salmon River on pedestrian and pack trail
Open to pedestrian and equestrian activities only

BG&CM - Clearwater River Bridge (Nez Perce County, Idaho)
Pratt through truss bridge over Clearwater River on Railroad (BG&CM)
Open to traffic

BG&CM - Front Street Overpass (Idaho County, Idaho)
Steel stringer bridge over Front Street on Bountiful Grain and Craig Mountain Railroad (BG&CM)
Open to traffic

BG&CM - North Fork Clearwater River Bridge (Clearwater County, Idaho)
Built 1936
Pratt through truss bridge over N.Fork.Clearwater on Railroad (BG&CM)
Open to traffic

BG&CM - Orofino Creek Bridge (Clearwater County, Idaho)
Pony/through plate girder bridge over Orofino Creek on Railroad (BG&CM)
Open to traffic

Big Bear Creek Bridge (Latah County, Idaho)
Built 1940; rehabilitated 2003
Pony truss bridge over Big Bear Creek on Old Highway 8
Open to traffic

Big Creek Bridge (Shoshone County, Idaho)
Built 1936
Pony truss bridge over Big Creek on FR 2354
Open to traffic

Big Creek Bridge (Valley County, Idaho)
Built 1933; rehabilitated 1955
Concrete tee beam bridge over Big Creek on Sh 55
Open to traffic

Big Lost River Bridge (Butte County, Idaho)
Built 1920; replaced 2010
Lost through truss bridge over Big Lost River on 3350
Replaced by a new bridge

Big Lost River Bridge (Butte County, Idaho)
Built 1920; Replaced 2012
Lost Pony truss bridge over Big Lost River on 2400 Road North
Replaced by a new bridge

Big Lost River Bridge (Custer County, Idaho)
Built 1920; replaced 2007
Lost through truss bridge over Big Lost River on 3800
Replaced by a new bridge

Big Lost River Bridge (Custer County, Idaho)
Built 1915; replaced 2010
Lost through truss bridge over Big Lost River on 3700
Replaced by a new bridge

Big Lost River Bridge (Custer County, Idaho)
Built 1918
Through truss bridge over Big Lost River on Old Chilly Road (Old Chilly Rd)
Open to traffic

Big Lost River Bridge (Custer County, Idaho)
Built 1918
Through truss bridge over Big Lost River on STC 6869
Open to traffic

Big Lost River Bridge (Butte County, Idaho)
Built 1926
Concrete tee beam bridge over Big Lost River on Stc 6749; 3300w
Open to traffic

Big Wood River Bridge (Gooding County, Idaho)
Built 1930; rehabilitated 2003
Through truss bridge over Big Wood River on S 2300 E
Open to traffic

Black Prince Trestle (Shoshone County, Idaho)
Built 1912; rehabilitated 1991
Wooden bridge on North Side Road (North Side Rd) east of Calder
Open to traffic

Blackfoot River Bridge (Caribou County, Idaho)
Built Ca. 1900, Replaced 2001
Lost Warren pony truss bridge over Blackfoot River on North Trail Road
Replaced by new bridge

BNSF - Lake Pend Oreille Bridge (Bonner County, Idaho)
"Built by Northern Pacific railroad in 1882"; "Rebuilt for the first time in 1905"; ."Another rebuilt program was done in 2008, when BNSF railway replaced a dozen support wooden piers at the north end."
Bridge over Pend Oreille Lake on Railroad (BNSF)
Open to traffic

BNSF - Sand Creek Bridge (Bonner County, Idaho)
Built 1972 during line relocations due to the Burlington Northern merger in 1970. Built to tie Great Northern line on west side of Sand Creek to Northern Pacific line on east side of Sand Creek.
Deck plate girder bridge over Sand Creek, US 2, & US 95 on BNSF Kootenai Subdivision
Open to traffic

BNSF - Tunnel 10.1 (Boundary County, Idaho)
Lined 1913.
Tunnel on BNSF Kootenai Subdivision


BNSF - Tunnel 10.2 (Boundary County, Idaho)
Lined 1912.
Tunnel on BNSF Kootenai Subdivision
Open to traffic

Boise River Bridge (Ada County, Idaho)
Lost Through truss bridge over Boise River on Star Road
Replaced by a new bridge

Boise River Greenbelt - 8th Street Bridge (Ada County, Idaho)
Built 1911; Converted to pedestrian use 1988
Pratt through truss bridge over Boise River on Boise River Greenbelt (an old alignment of 8th Street)
Open to pedestrians

Boise River Greenbelt - Boise River Bridge (Ada County, Idaho)
Built 1923
Pratt through truss bridge over Boise River on the Boise River Greenbelt (Old Railroad Bridge)
Open to pedestrians

Boise Street Bridge (Boise County, Idaho)
Built 1908; rehabilitated 1993
Pony truss bridge over Payette River on Boise Street in Horseshoe Bend
Open to traffic

Bonners Ferry Bridge (Boundary County, Idaho)
Built 1932-33; rehabilitated 1970; replaced 1984
Lost five-span Parker through truss bridge over Kootenai River on US 95 in Bonners Ferry
Replaced by new bridge

Boulder Creek Suspension Foot / Pack Bridge (Idaho County, Idaho)
Lost Wire suspension bridge over Boulder Creek on NF 1649
Replaced by a new bridge

Bridge Island Bridge (Private) (Canyon County, Idaho)
Built ca. 1890
Pratt through truss bridge over Snake River Channel on Private Drive
Closed to the public; Privately owned.

Bristol Park Lane Bridge (Bannock County, Idaho)
Warren pony truss with all verticals bridge on Bristol Park Lane
Open to traffic

Broadway Arch Bridge (Bonneville County, Idaho)
Built 1928; Widened ca. 1966, Damaged by flooding from the Teton Dam failure 1976; Replaced ca. 1981
Lost Open-spandrel arch bridge over Snake River on Broadway Street
Replaced by a new bridge

Broadway Boulevard Bridge (Blaine County, Idaho)
Built 2001
Timber through arch bridge over Big Wood River on Broadway Blvd. in Ketchum
Open to traffic

Broadway Bridge (Ada County, Idaho)
Built 1956; Replaced 2016
Lost Concrete stringer bridge over Boise River on US 20 & Broadway
Replaced by a new bridge

Broadway Bridge (Old) (Ada County, Idaho)
Built 1893; Replaced 1956
Lost Pennsylvania through truss bridge over Boise River on Broadway & Boise Valley Railway
Replaced by a new bridge

Broadway Truss Bridge (Bonneville County, Idaho)
Built 1907, Replaced and relocated to Johns Hole in 1928
Lost Pratt through truss bridge over Snake River on Broadway Street
Replaced by a new bridge

Bullion Creek Bridge (Shoshone County, Idaho)
Built 1937
Wooden bridge over Bullion Creek on STC 5711
Open to traffic

Burton Road Bridge (Washington County, Idaho)
Built 1910; replaced 1991
Lost through truss bridge over Little Weiser River on Burton Road (FAS 3879), southeast of Cambridge
Replaced by new bridge

Butte Road Bridge (Gem County, Idaho)
Built 1908
Through truss bridge over Squaw Creek on Butte Road
replaced by a new bridge

BVRy - Boise River Bridge (Boise) (Ada County, Idaho)
Built 1906; Removed ? and traffic switched to the Broadway Bridge
Lost through truss bridge over Boise River on Boise Valley Railway
Removed

BVT - Boise River Bridge (Canyon County, Idaho)
Built 1907; Removed ca. 1928
Lost Whipple through truss bridge over Boise River on Boise Valley Railroad
Removed

Camas Creek Bridge (Camas County, Idaho)
Built 1920; rehabilitated 1950
Pony truss bridge over Camas Creek on 200 South Road
Open to traffic

Camas Creek Bridge (Camas County, Idaho)
Built 1945
Pony truss bridge over Camas Creek on Macon Flat Road
Open to traffic

Canyon Creek Bridge (Madison County, Idaho)
Built 1932
Deck truss bridge over Canyon Creek on ID 33
Open to traffic

Canyon Creek Road Bridge (Elmore County, Idaho)
Built 1930; rehabilitated 2001
Wooden bridge over Canyon Creek on Canyon Creek Road
Open to traffic

Cataldo Bridge (Kootenai County, Idaho)
Built 1936
Through truss bridge over Coeur d'Alene River on E. Canyon Road
Open to traffic

Cda River Bridge (Shoshone County, Idaho)
Built 1952
Concrete tee beam bridge over Cda River on Fs Route No. 208
Open to traffic

Cedar Draw Bridge (Twin Falls County, Idaho)
Built 1964
Concrete arch bridge over Cedar Draw on STC 2721
Open to traffic

Cedar Road Bridge (Nez Perce County, Idaho)
Built 1929
Through truss bridge over Cottonwood Creek on Cedar Road
Open to traffic

Cherry Lane Bridge (Nez Perce County, Idaho)
Built 1919; rehabilitated 1978
Through truss bridge over Clearwater River on Cherry Lane
Open to traffic

Clark Fork Bridge (Bonner County, Idaho)
Built 1918
Lost through truss bridge over Clark Fork on S. River Road at Clark Fork
No longer exists

Clark Fork River Pedestrian Bridge (Bonner County, Idaho)
Pratt through truss bridge over Clark Fork River on a pedestrian trail (old Johnson/ River) Road


Clover Creek Bridge (Gooding County, Idaho)
Built 1915; rehabilitated 1987
Warren pony truss bridge over Clover Creek on 1200 Road South
Open to traffic

Coeur d'Alene River Bridge (Kootenai County, Idaho)
Built 1930; replaced 2007
Lost through truss bridge over Coeur d'Alene River on ID 97
Replaced by a new bridge

Coeur d'Alene River Bridge (Shoshone County, Idaho)
Built 1935
Pony truss bridge over Coeur d'Alene River on FR 412
Open to traffic

Coeur d'Alene River Bridge (Shoshone County, Idaho)
Built 1951
Through truss bridge over Coeur d'Alene River on Coeur d'Alene River Road
Open to traffic

College Street Bridge (Latah County, Idaho)
Built 1915
Concrete arch bridge over Paradise Creek on College Street in Moscow
Open to traffic

Cougar Creek Bridge (Kootenai County, Idaho)
Built 1940; rehabilitated 1989
Wooden bridge over Cougar Creek on McAvoy Road
Open to traffic

Coyote Creek Bridge (Nez Perce County, Idaho)
Built 1938; rehabilitated 1968
Through truss bridge over Coyote Creek on STC 4751
Open to traffic

Crane Creek Bridge (Washington County, Idaho)
Built 1917; rehabilitated 1987
Through truss bridge over Crane Creek on N. Crane Creek Road
Open to traffic

Crouch Bridge (Boise County, Idaho)
Built 1935; rehabilitated 1990
Wooden bridge over Middle Fork Payette River on Old Crouch Road
Open to traffic

CSP - Half Moon Trestle (Lewis County, Idaho)
Built 1907, abandoned 2000
Timber stringer bridge on Railroad
Intact but closed to all traffic

CSP - Lawyers Canyon Viaduct (Lewis County, Idaho)
Built 1908, abandoned 2000
Deck plate girder bridge over Lawyers Canyon on Railroad
Intact but closed to all traffic

Davis Road Bridge (Owyhee County, Idaho)
Built 1938; rehabilitated 1982
Wooden bridge over Little Valley Creek on Davis Road
Open to traffic

Deep Creek Bridge (Idaho County, Idaho)
Built 1938
Concrete arch bridge over Deep Creek on FR 468A
Open to traffic

Deep Creek Bridge (Latah County, Idaho)
Built 1939
Concrete tee beam bridge over Deep Creek on US 95
Open to traffic

Deer Park Bridge (Boise County, Idaho)
Built 1947
Steel stringer bridge over North Fork Boise River on Alexander Flat Road/Swanholm Road (FR 327)
Open to traffic

Dent Bridge (Clearwater County, Idaho)
Built 1971
Suspension bridge over North Fork Clearwater River on STC 4783
Open to traffic

Dover Bridge (Bonner County, Idaho)
Built 1937, Replaced 2011
Lost Parker through truss bridge over UP and BNSF railroad tracks on US 2
Replaced by a steel girder bridge in 2011

Dry Creek Bridge (Twin Falls County, Idaho)
Built 1934
Concrete arch bridge over Dry Creek on US 30
Open to traffic

E Merrill Road Bridge (Bannock County, Idaho)
Built 1925
Pony truss bridge over Portneuf R;Nw.Mccammon B on East Merrill Road
Intact but closed to all traffic

E.Fork.Jarbidge River Bridge (Owyhee County, Idaho)
Built 1922; rehabilitated 2012
Warren pony truss bridge over E.Fork.Jarbidge River on River Run Road
Open to traffic

Eagle Mountain Fooot / Pack Suspension Bridge (Idaho County, Idaho)
Wire suspension bridge over Locha River on pedestrian and equestrian pathway
Open to pedestrian and equestrian activity

Eagle Rock Canal Bridge (Bonneville County, Idaho)
Built 1933
Wooden bridge over Eagle Rock Canal on STC 6859
Open to traffic

East 3rd Street Bridge (Lincoln County, Idaho)
Built 1920
Warren pony truss with alternating verticals bridge over Little wood river on East 3rd Street
Closed to all traffic

East Canal Bridge (Cassia County, Idaho)
Built 1910; rehabilitated 1984
Pony truss bridge over East Canal on 2250 South
Open to traffic

East Dingle Bridge (Bear Lake County, Idaho)
Built 1910 by Charles G. Sheely; replaced 1989
Lost Pratt through truss bridge over Bear River on Hunter Hill Road
Replaced by new bridge

East Kooskia Bridge (Idaho County, Idaho)
Built 1935
pony truss bridge over Middle Fork Clearwater River on ID 13B in Kooskia
Open to traffic

EIRR - Henry's Fork Snake River Bridge (Fremont County, Idaho)
Built 1896; relocated here 1914
Two-span Pegram through truss bridge over Henry's Fork Snake River on the Eastern Idaho Railroad (EIRR)
Open to traffic

EIRR - Lorenzo Bridge (Madison County, Idaho)
Warren through truss with all verticals bridge over Snake River on Eastern Idaho Railroad (EIRR)
Open to traffic

EIRR - Ririe Bridge (A) (Jefferson County, Idaho)
Built 1894 as five-span bridge at Nyssa, Oregon; two-spans relocated here 1914
Two-span Pegram through truss bridge over Snake River on the Eastern Idaho Railroad - East Belt Branch
Open to traffic

EIRR - Ririe Bridge (B) (Jefferson County, Idaho)
Built 1894 as five-span bridge at Nyssa, Oregon; one span relocated here 1914
Pegram through truss bridge over Snake River Flood Channel on the Eastern Idaho Railroad - East Belt Branch
Replaced by a new bridge

EIRR - Snake River Bridge (Cassia County, Idaho)
Built Ca. 1890
Whipple through truss bridge over Snake River on Eastern Idaho Railroad (EIRR)
Open to traffic

Elk Creek Trestle (Shoshone County, Idaho)
Built 1912; rehabilitated 1991
Wooden bridge over Elk Creek on Potlatch Road
Open to traffic

Fairview Avenue Bridge (Ada County, Idaho)
Built 1932; rehabilitated 1996
Concrete arch bridge over Boise River on Eastbound Fairview Avenue in Boise
Open to traffic