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Every bridge in Powell County, Montana

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

113 inventoried bridges, busiest first

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

Powell County, Montana, has 113 bridges in the 2025 National Bridge Inventory: 36 rated good, 70 fair, and 7 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
I 90 over Dempsey Creek	1973	10,708	Fair
I 90 over Jr Grade Sep	1961	10,463	Fair
I 90 over Jr Grade Sep	1961	10,463	Fair
I 90 EB over Int Gold Creek	1959	5,992	Fair
I 90 EB over RR	1973	5,992	Poor
I 90 WB over Int Gold Creek	1959	5,992	Fair
I 90 over Int Jens	1959	5,992	Fair
I 90 over Int Jens	1959	5,992	Fair
I 90 over RR	1973	5,992	Poor
I 90 over Clark Fork River	1961	5,354	Fair
I 90 over Clark Fork River	1961	5,354	Fair
I 90 over Sep Sager Lane	1975	5,354	Good
I 90 over Sep Sager Lane	1975	5,354	Good
I 90 over Int E Garrison-rr	1979	5,232	Fair
I 90 over Int E Garrison-rr	1979	5,232	Fair
I 90 over Int W Garrisison-rr	1979	5,232	Fair
I 90 over Int W Garrison-rr	1979	5,232	Poor
I 90 over Little Blackfoot River	1979	5,232	Fair
I 90 over Little Blackfoot River	1979	5,232	Good
I 90 over Int Phosphate	1973	5,136	Fair
I 90 over Int Phosphate	1973	5,136	Fair
I 90 over Sep Garrison Frontage Rd	1973	5,136	Fair
I 90 over Sep Garrison Frontage Rd	1973	5,136	Fair
Main St over Cottonwood Creek	2014	5,074	Good
I 90 over Int N Deer Lodge	1961	4,371	Fair
I 90 over Int N Deer Lodge	1974	4,371	Fair
I 90 over Sep Eastside Road	1961	4,371	Fair
I 90 over Sep Eastside Road	1974	4,371	Fair
I 90 over Sep Milwaukee Avenue	1961	4,371	Fair
I 90 over Sep Milwaukee Avenue	1974	4,371	Fair
US 12 over Little Blackfoot River	1988	3,430	Fair
W Milwaukee Ave over Clark Fork River	1940	3,314	Fair
US 12 over Little Blackfoot Riv-rr	2009	3,217	Fair
US 12 over Little Blackfoot River	1982	3,217	Fair
S 200 over N Fork Blackfoot River	1956	2,959	Fair
US 12 over Little Blackfoot River	1982	2,872	Fair
S 200 over Cottonwood Creek	1954	2,822	Good
S 200 over Monture Creek	1986	2,822	Fair
Main St over Clark Fork River	1949	2,330	Poor
S 200 over Arrastra Creek	2008	1,683	Good
S 141 over Blackfoot River	2004	1,674	Fair
Mt 141 over Threemile Creek	1961	1,594	Good
S 141 over Halfway Creek	1936	1,594	Fair
S 141 over Nevada Creek	1936	1,594	Poor
US 12 over Little Blackfoot River	1952	1,416	Fair
US 12 over RR	1949	1,416	Fair
S 141 over Stockpass-drainage	1965	1,408	Fair
S Frontage Rd 011 over Abandoned RR 043	2014	916	Good
S Frontage Rd 011 over Dempsey Creek 059	1930	916	Poor
S Frontage Rd 011 over Powell Creek 063	1930	916	Fair
S Frontage Rd 011 over Racetrack Creek 067	1930	916	Fair
S 271 over Nevada Creek	1947	308	Fair
Burns St over Little Blackfoot R 019	1960	281	Fair
Rock Creek Cattle over Clark Fork River 03	1989	280	Fair
Rock Creek Cattle over Clark Fork River 038	1989	280	Fair
Clark St over Cottonwood Creek 083	2007	245	Good
Gold Creek Rd over Clark Fork River 032	1982	242	Fair
Center St over Cottonwood Creek 049	2015	100	Good
Clagett St over Cottonwood Creek 081	2007	100	Good
Conley Ave over Clark Fork River	2021	100	Good
Cut Off Rd over Big Blackfoot River 002	1955	100	Fair
Dry Gulch Rd over N Fork Blackfoot R 007	1968	100	Fair
E Sager Lane over Irrigation Canal	1990	100	Fair
E Sager Ln over Clark Fork River 048	2006	100	Fair
Fourth St over Cottonwood Creek 080	2007	100	Good
Kohrs St over Cottonwood Creek 065	2003	100	Fair
Little Blackfoot R over Little Blackfoot R 021	1976	100	Fair
Little Blackfoot R over Little Blackfoot River	1981	100	Good
Lower Game Range R over Cottonwood Creek	1990	100	Fair
Lower Game Range R over Cottonwood Creek 054	1978	100	Good
N Old Stage Rd over Rock Creek 078	2007	100	Good
Race Track Rd over Int Racetrack-i 90 001	1978	100	Fair
Ramp to Main St over Int S Deer Lodge-i 90	1961	100	Fair
Raymond Rd over Blackfoot River 077	1997	100	Fair
River Junction/ Sc over Blackfoot River 004	1994	100	Fair
Rock Creek Lake Rd over Rock Creek 079	2009	100	Good
S Mullan Trail Rd over Clark Fork River 030	2003	100	Fair
S Mullan Trail Rd over RR 028	2000	100	Fair
Sawmill Rd over Rock Creek 047	2006	100	Good
Second Street over Cottonwood Creek	2012	100	Good
Telegraph CR Rd over Telegraph Creek 061	1950	100	Fair
Trout Creek Rd over Little Blackfoot R 018	1908	100	Fair
Willow Rd over Little Blackfoot R 042	2023	100	Good
Yellowstone Trail over Racetrack Creek 036	2006	100	Good
Sawmill Rd over Clark Fork River 026	2006	78	Fair
Willow Road over Racetrack Creek	2015	75	Good
C.wood Lakes Rd over Morrell Creek	1954	50	Fair
Morrell Creek Rd over Morrell Creek	2015	50	Good
Nfsr 314 over Trout Creek	2004	50	Good
No Data Entered over Dunham Creek	2020	50	Good
No Data Entered over Ef Spruce Creek	2020	50	Good
No Data Entered over Monture Creek	1953	50	Fair
No Data Entered over West Fork Spruce Creek	2020	50	Good
Ovando Helmville R over Big Blackfoot River 006	1953	50	Fair
Ovando Helmville R over N Fk Blackfoot River 005	2000	50	Fair
Beck Hill Rd over Int Beckhill I 90 008	1978	49	Fair
Beck Hill Rd over Little Blackfoot R 023	2011	49	Good
Cottonwood Lk Rd over Cottonwood Creek	2007	40	Good
N.fk Blackft Rd over Lake CR	1964	40	Fair
N.fk Blackft Rd over N Fk Blackfoot Riv	1960	40	Fair
No Data Entered over Lodgepole CR	1996	40	Good
No Data Entered over Lodgepole CR	1996	40	Fair
No Data Entered over No Data Entered	2010	40	Fair
Road 227 over Kading Creek	2011	40	Good
Road over Racetrack CR	1985	40	Fair
Route 4106 over Klondike Creek	2013	40	Good
Route 4106 over Theodore	2015	40	Good
No Data Entered over Blackfoot River	2011	31	Good
2801: Chamberlain over East Fork Chamberlain Cr	2008	25	Fair
2864: Braziel CR. over Nevada Creek	1977	25	Fair
Greenhouse Rd over Dempsey Creek	2000	23	Good
Chokecherry Ln over Little Blackfoot R 027	1914	19	Poor
Snow Shoe CR Rd over Little Blackfoot R 017	2001	10	Good

Source: FHWA National Bridge Inventory, 2025.

Powell County bridge conditions · Montana bridges by county.

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