US Bridges

Custer County, Idaho bridges

Custer County has 126 bridges and culverts in the National Bridge Inventory, the oldest built in 1926. 14 (11%) are rated poor. The most common type is stringer/multi-beam or girder (52%).

Bridges
126
Good
32%
Fair
57%
Poor
11%
14 bridges
Average age
46.8 yrs
Posted or closed
11

Map of bridges in Custer County

Green good, amber fair, red poor. Click a marker for details.

Search bridges in Custer County

Type at least two characters, or pick a condition or type, to search every bridge in the county.

Condition

11%poor
Good32%(40)
Fair57%(72)
Poor11%(14)

When they were built

<1900: 0 bridges<19001900s: 0 bridges19001910s: 0 bridges19101920s: 1 bridges119201930s: 4 bridges419301940s: 2 bridges219401950s: 9 bridges919501960s: 32 bridges3219601970s: 28 bridges2819701980s: 16 bridges1619801990s: 10 bridges1019902000s: 7 bridges720002010s: 13 bridges1320102020s: 4 bridges42020
Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

  1. US 93 over Garden Creek
    2,300 vehicles/day
    Fair
  2. SH 21 over Crooked Creek
    2,200 vehicles/day
    Fair
  3. US 93 over Big Lost River
    1,500 vehicles/day
    Fair
  4. US 93 over Challis Creek
    1,400 vehicles/day
    Good
  5. US 93 over Salmon River;challis Br.
    1,400 vehicles/day
    Good

Longest

  1. SH 75 over Salmon River;slate CR Br
    451 ft
    Good
  2. US 93 over Salmon River (watts Br.)
    358 ft
    Good
  3. SH 75 over Salmon River
    320 ft
    Fair
  4. US 93 over Salmon River;challis Br.
    306 ft
    Good
  5. SH 75 over Salmon River; W. Clayton
    298 ft
    Good

Oldest

  1. Old Chilli Road over Thousand Springs Creek
    Built 1926
    Poor
  2. Bayhorse Road over Salmon River;bayhorse CR
    Built 1930
    Fair
  3. Mule Shoe Mine RD over Salmon River;se.Clayton
    Built 1930
    Poor
  4. SH 75 over Yankee Fk of Salmon Rivr
    Built 1934
    Poor
  5. US 93 over Pahsimeroi River
    Built 1938
    Fair

All bridges in Custer County

Busiest first · showing 1–126 of 126
Bridges in Custer County
BridgeLocationBuiltTypeLengthDaily trafficCondition
US 93 over Garden Creek
No. 000000000017840
At Challis1941Frame21 ft2,300Fair
SH 21 over Crooked Creek
No. 000000000012965
3.1 W. Stanley1968Culvert21 ft2,200Fair
US 93 over Big Lost River
No. 000000000017995
10.3 S. Mackay1987Box Beam or Girders - Multiple65 ft1,500Fair
US 93 over Challis Creek
No. 000000000017846
4.8 N. Challis1991Slab36 ft1,400Good
US 93 over Salmon River;challis Br.
No. 000000000018031
2.6 S. Challis1995Stringer/Multi-beam or Girder306 ft1,400Good
Capitol Avenue over Swauger Slough
No. 000000000031815
In Mackay1940Stringer/Multi-beam or Girder23 ft1,220Fair
SH 75 over Redfish Lake Creek
No. 000000000017765
5.6 S. Stanley1960Tee Beam130 ft1,100Fair
SH 75 over Salmon River
No. 000000000017815
7.9 S. Challis1954Tee Beam320 ft1,100Fair
SH 75 over Gini Canal
No. 000000000017820
2.4 S. Challis1988Frame21 ft1,100Good
US 93 over Salmon River (watts Br.)
No. 000000000017866
10 N. Challis2009Stringer/Multi-beam or Girder358 ft1,100Good
US 93 over Pahsimeroi River
No. 000000000017870
At ELLIS;17 N. Challis1938Tee Beam113 ft1,100Fair
US 93 over Warm Spring Creek
No. 000000000018011
6.8 S. Challis2018Culvert23 ft810Good
SH 75 over Salmon River
No. 000000000017730
5.6 S. Obsidian1985Stringer/Multi-beam or Girder103 ft800Fair
SH 75 over Champion Creek
No. 000000000017735
4.2 S. Obsidian1974Tee Beam26 ft800Fair
SH 75 over Fourth of July Creek
No. 000000000017740
3.8 S. Obsidian1974Tee Beam26 ft800Fair
SH 75 over Salmon River
No. 000000000017760
5.0 S. Stanley1985Stringer/Multi-beam or Girder154 ft800Fair
SH 75 over Valley Creek
No. 000000000017770
0.5 N. Stanley1977Box Beam or Girders - Multiple111 ft680Fair
SH 75 over Basin Creek
No. 000000000017776
6.8 N. Stanley2007Box Beam or Girders - Multiple51 ft680Fair
SH 75 over Yankee Fk of Salmon Rivr
No. 000000000017780
1.0 E. Sunbeam1934Tee Beam200 ft680Poor
SH 75 over Salmon River;slate CR Br
No. 000000000017786
9.0 W. Clayton2011Stringer/Multi-beam or Girder451 ft680Good
SH 75 over Salmon River; W. Clayton
No. 000000000017791
2 W. Clayton2008Stringer/Multi-beam or Girder298 ft680Good
SH 21 over Cape Horn Creek
No. 000000000012955
17.8 W. Stanley1964Box Beam or Girders - Multiple110 ft620Fair
SH 21 over Stanley Lake Creek
No. 000000000012960
4.4 W. Stanley1966Tee Beam90 ft620Fair
SH 21 over Elk Creek
No. 000000000036120
7.2 W. Stanley2022Frame28 ft620Fair
SH 75 over Salmon River;e. Clayton
No. 000000000017796
5 E. Clayton2014Stringer/Multi-beam or Girder263 ft600Good
SH 75 over E. Fk. Salmon River
No. 000000000017801
5.1 E. Clayton2014Stringer/Multi-beam or Girder140 ft600Good
SH 75 over Bradshaw Creek
No. 000000000017805
14.1 S. Challis1988Frame29 ft600Good
SH 75 over Malm Gulch
No. 000000000017810
12.1 S. Challis1988Frame22 ft600Good
Fdr over Redfish Lake Creek
No. 041404000018803
Redfish Lake Outlet2015Stringer/Multi-beam or Girder110 ft500Good
Challis Creek RD over Challis Creek
No. 000000000031761
3.8 N. 1.8 W. Challis1997Frame24 ft480Good
STC6868;TRAIL Crk over N. Fork Big Lost River
No. 000000000033375
17.3 N.E. Sun Valley1970Slab32 ft440Fair
STC6868;TRAIL Crk over N. Fork Big Lost River
No. 000000000033380
18.9 N.E. Sun Valley1970Slab32 ft440Fair
Squaw Creek Road over Squaw Creek
No. 000000000031730
1.5 N. 3.4 W. Clayton1960Tee Beam24 ft330Poor
Squaw Creek RD over Squaw Creek
No. 000000000031740
2.9 N. 3.5 W. Clayton1960Tee Beam24 ft330Poor
Squaw Creek RD over Squaw Creek
No. 000000000031755
2.9 N. 3.8 W. Clayton1960Tee Beam25 ft300Poor
STC6868;TRAIL Crk over N. Fork Big Lost River
No. 000000000033386
20.5 N.E. Sun Valley2016Tee Beam91 ft300Good
STC6702;SMELTER RD over Big Lost River
No. 000000000031715
0.2 S. Mackay1974Tee Beam77 ft260Fair
Yankee Fork Road over Yankee Fork Creek
No. 000000000036600
1.1 N 0.7 E of Sunbeam1966Stringer/Multi-beam or Girder106 ft200Fair
Bayhorse Road over Salmon River;bayhorse CR
No. 000000000031660
8.5 S. 1.2 W. Challis1930Truss - Thru122 ft170Fair
Houston Road over Big Lost River
No. 000000000031695
1.5 S. 1.5 E. Mackay1973Tee Beam59 ft170Fair
S6869;FSH Hatchry over Big Lost River(pence Br)
No. 000000000031786
5.4 N. 7.6 W. Mackay2018Tee Beam113 ft160Good
STC6867;GARDEN Crk over Garden Creek
No. 000000000031668
2.0 W. Challis2020Stringer/Multi-beam or Girder50 ft140Good
Bartlett Road over Big Lost River
No. 000000000031686
5.5 N. 19.8 W. Mackay1996Box Beam or Girders - Multiple70 ft110Fair
Squaw Creek RD over Salmon River;sw.Clayton
No. 000000000031655
0.7 S. 2.8 W. Clayton1970Tee Beam140 ft106Fair
Squaw Creek RD over Squaw Creek
No. 000000000031705
2.9 W. Clayton1960Tee Beam24 ft100Poor
Houston RD over Big Lost River
No. 000000000031776
0.5 S. Leslie1992Stringer/Multi-beam or Girder49 ft100Good
Dowton Lane over Pahsimeroi River
No. 000000000031811
5.0 S 3.4 E Ellis2016Stringer/Multi-beam or Girder81 ft100Good
Custer Road over Sulphur Creek
No. 000000000034660
3.8 S. 0.2 W. May2012Stringer/Multi-beam or Girder34 ft100Good
Custer Motorway over Yankee Fork River
No. 040603000001106
No Data Entered1961Stringer/Multi-beam or Girder37 ft100Fair
Custer Motorway over Yankee Fork
No. 040603000001107
No Data Entered1992Girder and Floorbeam System30 ft100Poor
Custer Motorway over Yankee Fork
No. 040603000001110
No Data Entered1962Stringer/Multi-beam or Girder31 ft100Fair
Custer Motorway over Yankee Fork
No. 040603000001113
No Data Entered1969Stringer/Multi-beam or Girder27 ft100Fair
Custer Motorway over Yankee Fork
No. 040603000001114
25 Miles NE of Stanley Id1973Girder and Floorbeam System25 ft100Fair
Beaver-Loon Road over Jordan Creek
No. 040603000001167
No Data Entered2001Slab29 ft100Fair
Beaver-Loon Road over Jordan Creek
No. 040603000001168
No Data Entered1993Box Beam or Girders - Multiple32 ft100Poor
Beaver-Loon Road over Jordan Creek
No. 040603000001169
No Data Entered1957Stringer/Multi-beam or Girder27 ft100Poor
No Data Entered over Jordan Creek
No. 040603000001188
No Data Entered1972Girder and Floorbeam System34 ft100Fair
No Data Entered over No Data Entered
No. 040603000001191
No Data Entered1972Girder and Floorbeam System102 ft100Good
Custer Motorway over Yankee Fork
No. 041303000003012
No Data Entered2004Stringer/Multi-beam or Girder44 ft100Fair
Fdr over Fourth of July Creek
No. 041403000001055
5 Miles UP 4th of July RD1992Slab24 ft100Good
Morgan Crk RD over Morgan Creek;ne.Challis
No. 000000000031735
9.3 N. 1.5 E. Challis1977Slab34 ft90Good
East Fork RD over E.Fk.Salmon River
No. 000000000031750
2.4 S. 5.6 E. Clayton1970Tee Beam52 ft90Fair
East Fork RD over Road Creek
No. 000000000031768
5.8 S 5.6 E Clayton2022Stringer/Multi-beam or Girder40 ft90Poor
East Fork RD over E.Fk.Salmon River
No. 000000000031770
5.4 S. 5.7 E. Clayton1972Tee Beam64 ft90Fair
Old Chilli Road over Thousand Springs Creek
No. 000000000031700
12.6 N. 13.2 W. Mackay1926Tee Beam26 ft80Poor
Fdr over Big Casino Creek
No. 041403000001100
Big Casino Campground1969Stringer/Multi-beam or Girder22 ft80Good
Hooper Lane over Pahsimeroi River
No. 000000000034630
3.5 S 0.8 E May2011Stringer/Multi-beam or Girder39 ft70Good
Mule Shoe Mine RD over Salmon River;se.Clayton
No. 000000000031650
0.3 S. 0.9 E. Clayton1930Truss - Thru152 ft60Poor
Fdr over Valley Creek
No. 041403000001087
North MP120.7 ST HWY 211986Slab40 ft60Good
4100 W over Big Lost River
No. 000000000031710
2.5 S. 5.2 E. Mackay1977Tee Beam70 ft50Fair
3700 North over Big Lost River
No. 000000000031726
1.2 E. Darlington2010Tee Beam87 ft50Good
Beaver Creek Road over Marsh Creek
No. 040601000001105
Crosses Marsh Creek1964Girder and Floorbeam System51 ft50Fair
No Data Entered over Yankee Fork
No. 040603000001185
No Data Entered1972Girder and Floorbeam System113 ft50Fair
No Data Entered over Yankee Fork
No. 040603000001186
No Data Entered1972Girder and Floorbeam System65 ft50Fair
No Data Entered over Yankee Fork
No. 040603000001187
No Data Entered1972Girder and Floorbeam System105 ft50Fair
No Data Entered over No Data Entered
No. 040603000001190
No Data Entered1972Girder and Floorbeam System87 ft50Poor
Beaver Creek Road over Beaver Creek
No. 040604000001119
No Data Entered1953Girder and Floorbeam System74 ft50Fair
Fdr over East Fork Salmon River
No. 041403000001023
20 Miles from Mouth of R.1989Tee Beam70 ft50Good
Fdr over East Fork Salmon River
No. 041403000001024
22 Miles UP East Fork R.1989Tee Beam64 ft50Fair
Fdr over Germania Ceeek
No. 041403000001025
25 UP East Fork Salmon R.1956Slab30 ft50Fair
Fdr over East Fork Salmon River
No. 041403000001026
28 Miles UP East Fork R.1960Stringer/Multi-beam or Girder40 ft50Fair
Fdr over East Fork Salmon River
No. 041403000001049
Bowery Guard Station1991Stringer/Multi-beam or Girder48 ft50Fair
Fdr over Alturas Lake Creek
No. 041403000001052
12 Miles South of Stanley1955Stringer/Multi-beam or Girder34 ft50Fair
Fdr over Pettit Lake Creek
No. 041403000001053
Pettit Lake1982Stringer/Multi-beam or Girder32 ft50Poor
Fdr over Salmon River
No. 041403000001057
1 Mile West Svwc Snra1960Stringer/Multi-beam or Girder88 ft50Fair
Fdr over Huckelberry Creek
No. 041403000001058
3 Miles West Sessions Loe1984Stringer/Multi-beam or Girder24 ft50Good
Fdr over Fishhook Creek
No. 041403000001059
Redfish Lake1975Stringer/Multi-beam or Girder24 ft50Good
Fdr over Fishhook Creek
No. 041403000001060
Redfish Lake Beach Area1956Stringer/Multi-beam or Girder26 ft50Fair
Fdr over Hell Roaring Creek
No. 041403000001089
2 Miles West Svwc1984Stringer/Multi-beam or Girder32 ft50Fair
Fdr over Stanley Lake Creek
No. 041403000001092
1/2 Mile East of HWY 211969Stringer/Multi-beam or Girder34 ft50Fair
Fdr over Salmon River
No. 041403000001098
7 Miles East Stanley1967Stringer/Multi-beam or Girder120 ft50Fair
Fdr over Salmon River
No. 041403000001099
4 Miles NE of Stanley1969Stringer/Multi-beam or Girder156 ft50Fair
Fdr over Valley Creek
No. 041403000001101
6 Miles NW of Stanley1950Stringer/Multi-beam or Girder68 ft50Poor
Fdr over Slate Creek
No. 041403000001102
1 Mile Above Salmon R Br1976Stringer/Multi-beam or Girder22 ft50Good
Fdr over Big Boulder Creek
No. 041403000001103
20 Miles UP East Fork S R1980Tee Beam72 ft50Good
Fdr over Iron Creek
No. 041404000018796
1.2 Miles UP from HWY 212012Slab36 ft50Good
Old Chilly RD over Big Lost River
No. 000000000031746
9.6 N 12.7 W Mackay2023Stringer/Multi-beam or Girder80 ft40Good
Basin Creek Road over East Fork Basin Creek
No. 040603000001126
No Data Entered1979Stringer/Multi-beam or Girder25 ft40Fair
Thompson CR Road over Thompson Creek
No. 040603000001127
No Data Entered1982Stringer/Multi-beam or Girder30 ft40Fair
Trealor Creek Road over Sq___ Creek
No. 040603000001132
No Data Entered1966Stringer/Multi-beam or Girder24 ft40Fair
Sawmill Canyon RD over Little Lost River
No. 040604000001118
40.5 Mi. Nnw of Howe Id1957Stringer/Multi-beam or Girder24 ft40Fair
Corral Canyon Road over N. Fk. Big Lost River
No. 040604000001131
No Data Entered1979Stringer/Multi-beam or Girder26 ft40Fair
3800 North RD over Big Lost River
No. 000000000031721
1.0 N. Darlington2007Tee Beam90 ft30Good
STC6870;PAHSIMEROI over Big Creek Fish Passage
No. 000000000034633
9.0 S. 10.4 E. May2014Stringer/Multi-beam or Girder50 ft30Good
Wildhorse Creek RD over Wildhorse Creek
No. 000000000033370
17.0 N.E. Sun Valley1970Stringer/Multi-beam or Girder40 ft25Fair
E Fork Road over Wildhorse Creek
No. 000000000033390
19 N.E. Sun Valley1970Stringer/Multi-beam or Girder87 ft25Fair
E Fork Road over Star Hope Creek
No. 000000000033395
14.6 W. Mackay1980Stringer/Multi-beam or Girder54 ft25Fair
1901: Herd Creek over East Fork Salmon River
No. 000000000L59857
9 MI S of ID751964Stringer/Multi-beam or Girder101 ft25Good
1920: Darling Cree over Challis Creek
No. 000000000L59858
0.3 MI N of Challis CR RD1981Slab44 ft25Good
1920: Darling Cree over West Fork Morgan Creek
No. 000000000L59859
6.5 MI NW of US931995Stringer/Multi-beam or Girder41 ft25Good
1979: Old Stage over Morgan Creek
No. 000000000L59860
5 MI N of US932004Stringer/Multi-beam or Girder48 ft25Good
Copper Basin Loop over Star Hope Creek
No. 000000000036150
21.0 E. Sun Valley1970Stringer/Multi-beam or Girder26 ft20Fair
Sq___ Creek Road over Paasasikwana Naokwaide
No. 040603000001129
No Data Entered1964Stringer/Multi-beam or Girder28 ft20Fair
Sq___ Creek Road over Paasasikwana Naokwaide
No. 040603000001130
No Data Entered1964Stringer/Multi-beam or Girder30 ft20Fair
Beaver Creek Road over Seafoam Creek
No. 040601000001123
No Data Entered1968Stringer/Multi-beam or Girder27 ft10Fair
Beaver Creek Road over Float Creek
No. 040601000001124
No Data Entered1967Stringer/Multi-beam or Girder27 ft10Fair
Beaver-Loon Road over Beaver Creek
No. 040603000001158
No Data Entered1967Stringer/Multi-beam or Girder31 ft10Fair
Beaver-Loon Road over Loon Creek
No. 040603000001160
No Data Entered1957Stringer/Multi-beam or Girder31 ft10Fair
Beaver-Loon Road over Nelson Creek
No. 040603000001161
19 Miles North of Sunbeam1967Stringer/Multi-beam or Girder31 ft10Fair
Beaver-Loon Road over W.Fk Mayfield Creek
No. 040603000001162
19 Miles N of Sunbeam1968Stringer/Multi-beam or Girder27 ft10Fair
Beaver-Loon Road over W.Fk. Mayfield Creek
No. 040603000001163
No Data Entered1968Stringer/Multi-beam or Girder32 ft10Fair
Beaver-Loon Road over W. Fk. Mayfield Creek
No. 040603000001165
No Data Entered1967Stringer/Multi-beam or Girder22 ft10Fair
Road over Knapp Creek
No. 040603000001173
No Data Entered1964Stringer/Multi-beam or Girder31 ft10Fair
Bull Creek Road over Little Lost River
No. 040604000001139
No Data Entered1971Stringer/Multi-beam or Girder34 ft10Fair
Redrock Loop over Little Lost River
No. 040604000001140
No Data Entered1966Stringer/Multi-beam or Girder27 ft10Good
Beaver-Loon Road over Beaver Creek
No. 040603000001159
No Data Entered1972Stringer/Multi-beam or Girder25 ft5Fair

Structure types in Custer County

Stringer/Multi-beam or Girder6551.6%
Tee Beam2519.8%
Slab107.9%
Girder and Floorbeam System107.9%
Frame64.8%
Box Beam or Girders - Multiple64.8%
Truss - Thru21.6%
Culvert21.6%

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