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Every bridge in Beaverhead County, Montana

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

227 inventoried bridges, busiest first

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

Beaverhead County, Montana, has 227 bridges in the 2025 National Bridge Inventory: 53 rated good, 150 fair, and 24 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
S 89 over Int North Dillon I 15	1973	4,241	Fair
S 89 over Local-blacktail Cr-rr	1974	4,241	Fair
I 15 over Drainage Irr Ditch	1973	3,915	Fair
I 15 over Birch Creek	1973	3,852	Fair
I 15 over Beaverhead River	1982	2,863	Fair
I 15 over Beaverhead River	1982	2,863	Fair
I 15 over Int Jackson-hwy 278	1982	2,863	Fair
I 15 over Int Jackson-hwy 278	1982	2,863	Good
I 15 over Poindexter Slough	1983	2,863	Fair
I 15 over Poindexter Slough	1983	2,863	Fair
I 15 over Sep Local Road	1983	2,863	Fair
I 15 over Sep Local Road	1983	2,863	Fair
Hwy 91 N over Beaverhead River 033	1946	2,676	Poor
I 15 over Sep Park Street	1983	2,636	Fair
I 15 over Sep Park Street	1983	2,636	Fair
S 41 over Stone Creek	1949	2,403	Fair
I 15 over Beaverhead River	1981	2,239	Fair
I 15 over Beaverhead River	1965	2,239	Fair
I 15 over Beaverhead River	1980	2,239	Fair
I 15 over Beaverhead River	1965	2,239	Fair
I 15 over Int Barretts-rebich Ln	1965	2,239	Fair
I 15 over Int Barretts-rebich Ln	1980	2,239	Fair
I 15 over Int Grasshopper Creek	1988	2,239	Fair
I 15 over Int Grasshopper Creek	1988	2,239	Fair
I 15 over Beaverhd R-high Brdg Rd	1964	2,185	Fair
I 15 over Beaverhd R-high Brdg Rd	1981	2,185	Fair
I 15 over Beaverhead River	1962	2,185	Fair
I 15 over Beaverhead River	1981	2,185	Fair
I 15 over Beaverhead River	1964	2,185	Fair
I 15 over Beaverhead River	1980	2,185	Good
I 15 over Sep High Brdge Rd	1988	2,185	Fair
I 15 over Sep High Bridge Rd	1986	2,185	Fair
I 15 over Sep High Bridge Rd	1986	2,185	Fair
I 15 over Sep High Bridge Rd	1988	2,185	Fair
I 15 over Int Kidd	1971	2,116	Fair
I 15 over Int Kidd	1971	2,116	Fair
I 15 over Int Red Rock-red Rock Rd	1971	2,116	Fair
I 15 over Int Red Rock-red Rock Rd	1971	2,116	Fair
I 15 over Red Rock River	1962	2,116	Fair
I 15 over Red Rock River	1981	2,116	Fair
I 15 over Sep Roe Ln	1962	2,116	Fair
I 15 over Sep Roe Ln	1980	2,116	Fair
I 15 over Beaverhead River	1973	1,958	Good
I 15 over Beaverhead River	1973	1,958	Good
E Reeder Street over Blacktail Deer Creek 131	2010	1,937	Good
I 15 over Int Apex-birch CR Rd	1973	1,926	Fair
I 15 over Int Apex-birch CR Rd	1973	1,926	Fair
I 15 over Int Rock Cr-brownes Br R	1973	1,926	Fair
I 15 over Int Rock Cr-brownes Br R	1973	1,926	Fair
I 15 over Sep County Rd 203	1973	1,926	Fair
I 15 over Sep County Rd 203	1973	1,926	Good
I 15 over Big Sheep Creek	1971	1,863	Fair
I 15 over Big Sheep Creek	1971	1,863	Fair
I 15 over Int Dell	1971	1,863	Fair
I 15 over Int Dell	1971	1,863	Fair
I 15 over Int Lima-bailey St	1959	1,863	Poor
I 15 over Int Lima-bailey St	1980	1,863	Fair
I 15 over Sep Gosman Lane	1967	1,863	Fair
I 15 over Sep Gosman Lane	1971	1,863	Fair
Laknar Ln over Beaverhead River 095	2001	1,816	Fair
S 89 over Blacktail Creek	1983	1,804	Fair
S 89 over Int South Dillon I 15	1983	1,804	Fair
S 89 over RR	1983	1,804	Fair
I 15 over Int Monida S 509	1959	1,771	Poor
I 15 over Int Monida S 509	1981	1,771	Fair
I 15 over Int Snowline Stock Ln	1981	1,771	Fair
I 15 over Int Snowline Stock Ln	1981	1,771	Fair
I 15 over Sep RR	2016	1,771	Fair
I 15 over Sep RR	2015	1,771	Fair
I 15 over Sep RR	1981	1,771	Fair
I 15 over Sep RR	1980	1,771	Fair
I 15 over Sep Snowline Stock Ln	1981	1,771	Fair
I 15 over Sep Snowline Stock Ln	1981	1,771	Fair
S 278 over Grasshopper Creek	1957	668	Fair
S 43 Fh 20 over Big Hole River	1962	631	Fair
S 43 over Smart Creek	1970	616	Fair
S 43 over Wise River	1970	616	Fair
Mt Hwy 91 over Beaverhead River	1945	612	Fair
Mt Hwy 91 over Poindexter Slough	1936	612	Fair
Mt Hwy 91 over RR	1936	612	Poor
Mt-43 Fh 20 over Trail Creek	2021	461	Good
Mt-43 Fh 20 over Trail Creek	2021	461	Good
Mt-43 Fh 20 over Trail Creek	1961	461	Fair
S 43 Fh 20 over Ruby Creek	1961	461	Fair
S 43 Fh 20 over Trail Creek	1961	461	Good
Lovers Leap Rd over Sep I 15 12	1973	448	Fair
S 43 over Big Hole River	1960	448	Fair
S 278 over Drainage	1970	396	Fair
S 278 over Warm Spring Creek	1970	396	Fair
S 324 over Clark Canyon Dam Splwy	1962	396	Fair
S 324 over Int Horse Prairie I 15	1962	396	Fair
Frying Pan Rd over Sep I 15 126	1973	357	Fair
Frying Pan Road over West Side Canal 126	2011	357	Good
S 43 over Steel Creek	1956	353	Fair
Old Stage Rd over Beaverhead River 047	1995	298	Fair
Old Stage Rd over Canyon Ditch	1982	298	Fair
Old Stage Rd over Local Drainage 048	1959	298	Fair
Co Rd 002 Fh 73 over Grasshopper Creek 016	1998	292	Good
S 324 over Horse Prairie Creek	1963	241	Fair
S 324 over Medicine Lodge Creek	1963	241	Fair
Co Rd 002 Fh 73 over Wise River 017	1987	224	Fair
Co Rd 002 Fh 73 over Wise River 018	1987	224	Fair
Co Rd 002 Fh 73 over Wise River 019	1987	224	Fair
Co Rd 002 Fh 73 over Wise River 020	1971	224	Fair
Co Rd 002 Fh 73 over Wise River 021	1971	224	Good
Co Rd 002 Fh 73 over Wise River 076	1971	224	Fair
Co Rd 002 Fh 73 over Wise River 105	1971	224	Good
Co Rd 002 Fh 73 over Wise River 106	1971	224	Good
Co Rd O02 Fh 73 over Wise River 075	1971	224	Fair
Trapper CR Rd over Big Hole Overflow 055	1973	191	Fair
S 324 over Medicine Lodge Creek	1963	189	Fair
Big Sheep CR Rd C over Big Sheep Creek 134	2017	178	Good
Big Sheep CR Rd over Big Sheep Creek 012	2017	178	Good
Big Sheep CR Rd over Big Sheep Creek 013	2016	178	Good
Big Sheep CR Rd over Big Sheep Creek 014	2016	178	Good
Big Sheep CR Rd over Big Sheep Creek 015	2016	178	Good
Big Sheep CR Rd over Big Sheep Creek 120	2017	178	Good
Big Sheep CR Rd over Big Sheep Creek 122	1985	178	Fair
Hwy 91 N over Big Hole River 041	1940	158	Poor
Lima Dam Rd over Red Rock River 007	1982	118	Fair
Lima Dam Road over Red Rock River	2019	118	Fair
Bannack Bench Rd over Grasshopper Creek 009	2012	100	Good
Bannack Bench Rd over Horse Praire Creek 010	1981	100	Fair
Big Lake CR Rd over Big Hole River 091	1976	100	Fair
Big Lake CR over Big Hole River 090	1977	100	Fair
Big Swamp CR Rd / over Big Hole River 089	1925	100	Poor
Blacktail Rd over East Bench Canal 006	2024	100	Good
Brenner Lane over Bloody Dick Creek	2020	100	Good
Brenner Lane over Trail Creek	2020	100	Good
Browns Bridge Rd over Big Hole River 123	1915	100	Poor
Brundage Ln over Red Rock River 052	1920	100	Poor
Burma Rd over Big Hole River 073	2000	100	Fair
Carrigan Lane over Canyon Ditch 127	2011	100	Good
Carrigan Ln over East Bench Canal 061	1962	100	Fair
Cliff Rd over West Bench Canal 028	2018	100	Good
Corinne Trail over Horse Praire Creek 042	1951	100	Good
Corinne Trail over Horse Prairie Creek 043	2022	100	Poor
County Road 111 over Horse Prairie Creek 031	1920	100	Fair
Frontage Road 280 over Big Sheep Creek 027	1969	100	Fair
Hendricks Mill Roa over Grasshopper Creek	1980	100	Fair
Hendricks Mill Roa over Grasshopper Creek	1980	100	Fair
Hennaberry Rd over Beaverhead River 125	2000	100	Good
High Bridge Rd over Beaverhead River 125	1980	100	Fair
I 15 Frontage Rd over Beaverhead R-int Ramp	1988	100	Fair
Little Lake CR Rd over Big Hole River 087	1986	100	Fair
Little Lake CR Rd over Big Hole River 088	1974	100	Fair
Mansfield Ln over Horse Prairie Creek 011	2007	100	Good
Miner Lake Rd over Big Hole River 093	2004	100	Fair
Miner Lake Rd over Governor Creek 092	1951	100	Poor
Nissen Lane over Dillon Canal 129	2010	100	Good
Nissen Ln over East Bench Canal 001	1962	100	Fair
Red Rock Pass Rd over Odell Creek	1992	100	Fair
Red Rock Road over Big Sheep Creek 026	1931	100	Fair
Rock Creek Rd over Big Hole River 078	1989	100	Fair
Rock Creek Rd over Big Lake Creek 081	1958	100	Poor
Rock Creek Road over Big Hole River 077	2021	100	Good
Rock Creek Road over Big Hole River 077	2021	100	Good
S Railroad Avenue over Blacktail Deer Creek 130	2010	100	Good
Skinner Meadows Rd over Governor Creek 130	2010	100	Good
Steel Creek Rd over Steel Creek 082	2012	100	Good
Stibal Ln over Red Rock River 053	1975	100	Poor
Stoddard Dr over East Bench Canal 002	1962	100	Fair
Stone Creek Rd over East Bench Canal 003	1962	100	Fair
Sweetwater Rd over East Bench Canal 060	1962	100	Fair
Sweetwater Road over Drainage	1980	100	Fair
Taylor CR Rd over Grasshopper Creek 004	1986	100	Fair
Twin Lakes Rd over Big Hole River 080	1999	100	Fair
Upper N Fork Rd over N Fk Big Hole River 063	1978	100	Fair
Upper N Fork Rd over N Fk Bighole River 064	1977	100	Poor
W Park St over Beaverhead River 005	1992	100	Good
White Ln over East Bench Canal 102	1962	100	Fair
Argenta Rd over Rattlesnake Creek 039	2012	86	Good
Steel Bridge Ln over Red Rock River 084	2024	75	Good
Sage Creek Rd over Red Rock River 034	1977	71	Fair
Sage Creek Rd over Sage Creek 024	1985	71	Fair
Gravley Rd over Red Rock River 085	1982	62	Fair
Red Rock Rd over Limekiln Canyon 022	1931	60	Poor
S Valley Rd S-509 over Odell Creek	2002	59	Good
Anderson Lane over West Side Canal 1	2012	54	Fair
Anderson Ln over Beaverhead River 071	1930	54	Fair
Bond Rd over Sep I 15 12	1973	54	Fair
Canyon CR Road over Canyon CR	1952	50	Poor
Fdr 182 over Miner CR	1947	50	Fair
Fdr 2475 over Wise River	1986	50	Good
Fs Route 83 over Big Hole River	1950	50	Fair
No Data Entered over Big Hole River	2022	50	Good
No Data Entered over Canyon Creek	2023	50	Good
No Data Entered over No Data Entered	2008	50	Good
Road 325 over No Data Entered	2014	50	Good
Fdr 192 over Rock CR	1986	40	Fair
Fdr 606 over Birch CR	1954	40	Poor
Fdr 90 over Steel CR	1954	40	Fair
Fs Rte 192 over Rock Creek	1986	40	Good
No Data Entered over Big Lake	1971	40	Fair
No Data Entered over Birch CR	1953	40	Fair
No Data Entered over Bloody D--- CR	1998	40	Good
No Data Entered over No Data Entered	2009	40	Good
Lower N Fork Rd over Irrigation Canal 068	1994	35	Fair
Lower N Fork Rd over N Fk Big Hole River 069	2024	35	Fair
Lower N Fork Rd over Swamp Creek 070	1975	35	Fair
Birch Creek Rd over Birch Creek	2011	31	Good
Bimat Ln over Red Rock River 037	2018	30	Good
County Road 278 over Beaverhead River 124	1988	26	Good
1869: Deadwood Gul over Big Sheep Creek	1991	25	Fair
Fdr 1203 over Johnson CR	1968	25	Fair
Van Houten Road over Pioneer CR	1981	25	Fair
Fdr 624 over Ruby CR	1952	20	Poor
Fdr 945 over Ruby CR	1968	20	Poor
No Data Entered over Willow CR	1954	20	Fair
RiceBran access Rd over East Bench Canal	1962	20	Fair
Ashbough Trail over Red Rock River 086	1909	15	Fair
Big Swamp CR Rd over Big Swamp CR	1968	15	Poor
Fdr 1203 over Tie Creek	1964	15	Poor
Fdr 1278 over Pintlar Creek	1981	15	Fair
Fdr 7498 over Birch Creek	1995	15	Good
Nfsr #1137 over Johnson CR.	2002	15	Fair
Road 944 over Moose Creek	1974	15	Fair
Swamp CR Road over Big Swamp CR	1968	15	Fair
Swamp CR Road over Big Swamp CR	1968	15	Poor
Ryan Canyon Rd over Beaverhead River 023	1908	14	Poor
Fdr #1079 over Big Beaver CR.	2006	12	Good
No Data Entered over Bender CR.	2002	10	Good
No Data Entered over Wise River	1992	6	Poor
Fdr 7391 over No Data Entered	1987	5	Fair
No Data Entered over Wise River	1984	4	Fair
Roe Ln over Red Rock River 121	1913	4	Poor
Bloody D--- Road over Bloody D--- CR	1961	2	Fair

Source: FHWA National Bridge Inventory, 2025.

Beaverhead County bridge conditions · Montana bridges by county.

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