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Every bridge in Lemhi County, Idaho

Name: Every bridge in Lemhi County, Idaho
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

114 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Lemhi County, Idaho, has 114 bridges in the 2025 National Bridge Inventory: 65 rated good, 40 fair, and 9 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
US 93 over Salmon River;salmon Br.	1926	7,300	Poor
US 93 over Carmen Creek	1931	2,100	Fair
US 93 over Salmon River;carmen Br.	1970	2,100	Fair
US 93 over Tower Creek	1931	2,100	Fair
SH 28 over Lemhi River	2001	1,700	Good
SH 28 over Lemhi River	2001	1,700	Good
SH 28 over Lemhi River	2001	1,600	Good
SH 28 over Lemhi River	2018	1,600	Good
Williams Creek Rd over Salmon River; Shoup Br	2018	1,200	Good
US 93 over N.fk.salmon River	1955	1,100	Fair
Lemhi Road over Lemhi River (allen Br)	2016	880	Good
SH 28 over Agency Creek	2019	860	Good
SH 28 over Lemhi River	2018	860	Good
SH 28 over Lemhi River	2018	860	Good
SH 28 over Lemhi River	2018	860	Good
SH 28 over Lemhi River	2019	860	Good
SH 28 over Lemhi River	2019	860	Good
SH 28 over Lemhi River	2019	860	Good
SH 28 over Lemhi River	2019	860	Good
SH 28 over Lemhi River	2018	860	Good
US 93 over N. Fork Salmon River	1997	670	Good
US 93 over N. Fork Salmon River	1997	670	Good
US 93 over N. Fork Salmon River	1997	670	Good
US 93 over N.fk.salmon River	1955	670	Fair
60030 over Salmon River	2012	350	Good
Salmon River Road over Pine Creek	2012	350	Poor
Salmon River Road over Salmon River	2012	350	Good
N. St. Charles over Lemhi River	1948	310	Poor
S Daisy Street over Spring Creek	1975	250	Fair
No Data Entered over Boulder Creek	1966	200	Poor
No Data Entered over Indian Creek	1963	200	Fair
No Data Entered over Owl Creek	1959	200	Fair
No Data Entered over Panther Creek	1980	200	Poor
17 Mile Lane over Lemhi RIVER;17 Mile Br	1977	190	Good
STC6870;PAHSIMEROI over Pahsimeroi River	1978	190	Fair
SH 29 over Eighteen Mile Creek	2019	180	Good
SH 29 over Lemhi River	1972	180	Good
N. Baker Road over Lemhi River (baker Br)	1977	150	Good
Stc 6876;HAYDEN CR over Hayden Creek	1960	130	Fair
Island Park Access over Salmon River (island Br)	2016	120	Good
Maiers Lane over Lemhi River	1977	120	Good
Deep CR. Road over Deep Creek	2008	100	Good
Lemhi Road over Canyon Creek	2012	100	Good
No Data Entered over Musgrove Creek	2020	100	Good
Furey Lane over Pahsimeroi River	2015	90	Good
Parmenter Lane over Carmen Creek	2011	80	Good
4TH of July CR Rd over Fourth of July Creek	2013	70	Good
Cottom Lane over Lemhi River	1950	70	Fair
Diamond Creek Road over Wallace Creek	2011	70	Good
Hooper Lane over Big Springs	2011	70	Good
Hooper Lane over Big Springs Conn. Ditch	2011	70	Good
Hooper Lane over Little Springs	2011	70	Good
Peterson Ranch Rd over Hayden Creek	1955	70	Fair
Barracks Lane over Lemhi River	1930	60	Fair
Rattlesnake Crk R over Salmon River	2016	60	Good
Back Rd; Old Lemhi over Pratt Creek (#1)	2018	50	Good
Back Road over Wimpey Creek	2013	50	Good
Fdr 60055 over Napias Creek	1974	50	Good
Fdr 60103 over Panther Creek	1960	50	Fair
Fdr 61000 over Panther Creek	1983	50	Fair
Fsr 60055 over Panther Creek	1963	50	Fair
Hawley Creek Road over Hawley Creek	2014	50	Good
Iron Creek Road over Iron Creek	2010	50	Good
Iron Creek Road over Salmon River;iron Ck Br	1965	50	Fair
Leesburg Road over Arnett Creek	1994	50	Good
Lemhi Rd;old HWY28 over Lemhi River	1965	50	Fair
Lemhi Road over Lemhi River(high Br)	1992	50	Fair
Mabey Lane over Lemhi River	1968	50	Fair
No Data Entered over Blackbird Creek	1973	50	Good
No Data Entered over Blackbird Creek	1999	50	Fair
No Data Entered over Deep Creek	1962	50	Fair
No Data Entered over Moose Creek	1979	50	Fair
No Data Entered over North Fork Salmon	1956	50	Fair
No Data Entered over North Fork Salmon	1958	50	Fair
No Data Entered over North Fork Salmon	1959	50	Fair
No Data Entered over North Fork Salmon	1952	50	Fair
No Data Entered over Panther Creek	1981	50	Good
No Data Entered over Panther Creek	1953	50	Fair
No Data Entered over Yellowjacket Creek	1971	50	Fair
No Data Entered over Yellowjacket Creek	1963	50	Fair
No Data Entered over Yellowjacket Creek	1962	50	Poor
Old Hwy 28;BACK Rd over Agency Creek	2012	50	Good
Old Hwy 28;BACK Rd over Kenny Creek	2012	50	Good
Ringbone Mine Rd. over Napias Creek	1994	50	Fair
Sheep CR. Road over Sheep Creek	1985	50	Good
Stormy Peak Road over East Boulder Creek	1983	50	Good
Viola Lane over Lemhi River(bagley Br)	1991	50	Poor
Yellowjacket Road over Yellowjacket Creek	1956	50	Fair
3040: Rocky Canyon over Hawley Creek	2013	35	Good
Pratt Creek Road over Pratt Creek	2015	33	Good
Agency Creek Road over Agency Creek (bridge 1)	2016	30	Good
Idfg Access Road over Salmon River	1989	30	Fair
Sioux Lane over Tower Creek	2015	30	Good
3043: Warm Spring over Big Timber Creek	1979	25	Good
Moccasin-napias Rd over Napias Creek	1953	25	Poor
18 Mile Road over Eighteen Mile Creek	2020	20	Good
Rattlesnake Ck Rd over Rattlesnake Creek (#2)	2019	20	Good
Indian Creek Rd over Indian CREEK(#2)	1970	15	Fair
Indian Creek Rd over Indian CREEK(#3)	1970	15	Fair
Indian Creek Rd over Indian CREEK(#4)	1970	15	Fair
Bear Valley CR. Rd over Bear Valley Creek	1966	10	Fair
Carmen Creek Road over Carmen Creek	1961	10	Fair
Hayden CR. Road over Hayden Creek	1974	10	Good
Level C Road over E. Fork Hayden Creek	1974	10	Good
Road over Bear Valley Creek	1960	10	Poor
Road over Twin Creek	2007	10	Good
60036 over Indian Creek	2008	5	Good
60103-a over Moyer Creek	2024	5	Good
Fdr 60099 over Copper Creek	1971	5	Fair
Indian Creek Road over Indian Creek	2008	5	Good
No Data Entered over Indian Creek	2008	5	Good
No Data Entered over North Fork Salmon	1963	5	Fair
No Data Entered over Silver Creek	1994	5	Good
Kelsey (r.snk CK1) over Rattlesnake Creek (#1)	2018	3	Good

Source: FHWA National Bridge Inventory, 2025.

Lemhi County bridge conditions · Idaho bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.