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Every bridge in Park County, Montana

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

126 inventoried bridges, busiest first

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

Park County, Montana, has 126 bridges in the 2025 National Bridge Inventory: 27 rated good, 86 fair, and 13 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 Int S Livingston-us Hwy	1962	9,461	Fair
I 90 over Int West Livingston	1962	9,461	Fair
I 90 over Int West Livingston	1962	9,461	Fair
I 90 over Quinn Creek Road	2022	8,272	Good
I 90 over Quinn Creek Road	2022	8,272	Good
I 90 over Int Hopper	1978	8,236	Fair
I 90 over Int Hopper	1978	8,236	Fair
I 90 over Orea Creek Road	1977	8,236	Fair
I 90 over Orea Creek Road	1977	8,236	Fair
I 90 over Int S Livingston-us Hwy	1962	6,397	Fair
I 90 over Sep S 295	1962	6,397	Fair
I 90 over Sep S 295	1962	6,397	Fair
I 90 over Yellowstone River	1962	6,397	Fair
I 90 over Yellowstone River	1962	6,397	Fair
I 90 over Int Mission Creek	1987	5,766	Fair
I 90 over Int Mission Creek	1987	5,766	Fair
I 90 over Int Springdale West	1987	5,766	Fair
I 90 over Int Springdale West	1987	5,766	Fair
I 90 over Mission Creek	1987	5,766	Fair
I 90 over Mission Creek	1959	5,766	Fair
I 90 over Peterson Creek	1987	5,766	Good
I 90 over Sep County Rd Peerson Rd	1987	5,766	Fair
I 90 over Sep County Road	1987	5,766	Fair
I-90 over Peterson Creek	2012	5,766	Fair
Business Rte 90 over Yellowstone River	2013	5,141	Fair
Second St S-us 89 over Yellowstone River	1930	4,964	Fair
US 89 over Int East Livingston I 90	1962	2,910	Poor
North Entrance Roa over Gardner River	1957	2,294	Fair
North Entrance Roa over Gardner River	1958	2,294	Fair
US 89 over Big Creek	1960	2,289	Fair
US 89 over Yellowstone River	1958	2,289	Fair
US 89 over Int Mission I 90	1962	2,174	Fair
US 89 over RR	1955	2,174	Fair
US 89 over Yellowstone River	1955	2,174	Fair
Murphy Ln over Irrigation Canal 003	2003	1,471	Good
Murphys Ln over Yellowstone River 004	1949	1,471	Fair
US 89 over Kay Creek	1984	1,457	Fair
US 89 over Rock Creek	1984	1,457	Fair
US 89 over Shields River	1984	1,457	Fair
US 89 over Willow Creek	1984	1,457	Good
US 89 over Shields River	1981	1,271	Fair
S 540 - E River Rd over Yellowstone River	1921	1,160	Fair
US 89 over Flathead Creek	1973	1,140	Fair
S 540-e River Rd over Mill Creek	1925	909	Fair
Old Clyde Park Rd over Ferry Creek 037	1938	677	Fair
Brackett Creek Rd over Shields River 007	1980	424	Fair
Pine Creek Rd over Yellowstone River 069	1990	367	Fair
S 540-e River Rd over Emigrant Creek	2006	262	Fair
S 540-e River Rd over Six Mile Creek	2006	262	Good
Mill Creek Rd over Mill Creek 044	1972	247	Fair
Mill Creek Rd over Yellowstone River 043	1960	247	Fair
Main Boulder Rd over Boulder River 040	1938	157	Fair
Main Boulder Rd over Four Mile Creek 039	1938	157	Fair
Main Boulder Road over Boulder River	1950	157	Poor
Main Boulder Road over Boulder River	1940	157	Fair
Nf-6639 Rd over Boulder River 041	1933	157	Poor
Mill Creek Rd over Mill Creek 045	1972	104	Good
Old Stage Road over Yellowstone River 077	1980	104	Fair
S 9TH St-island Dr over Yellowstone River 070	2011	101	Fair
Anderson Rd over Shields River 014	1979	100	Fair
Bannock Trail over Wyoming Creek	2022	100	Good
Big Creek Rd - Nf- over Big Creek 062	1938	100	Fair
Canyon Creek Rd over Brackett Creek 006	1975	100	Fair
Castle Mountain Rd over Brackett Creek 032	1970	100	Fair
Cinnabar Basin Rd over Mulherin Creek 076	2005	100	Fair
Cinnabar Basin Rd over Yellowstone River 068	2008	100	Fair
Coal Camp Rd over Shields River 015	1975	100	Fair
Conlin Rd over Emigrant Creek 075	2008	100	Fair
Convict Grade Rd over Sheilds River	2019	100	Good
Cottonwood Bench R over Cottonwood Creek 030	1908	100	Fair
County Road 280 over Soda Butte Creek	2022	100	Good
Crevice Mnt Rd over Bear Creek 080	2009	100	Fair
Daisy Dean Rd over Shields River 019	1984	100	Fair
Elk Creek Rd over Shields River 018	1960	100	Poor
Enyart Ln over Cottonwood Creek 026	1970	100	Fair
Fiddle Creek Rd over Shields River 035	2001	100	Fair
Hamilton Road over Smith Creek	2012	100	Fair
Hammond Creek Rd over Rock Creek 025	1967	100	Poor
Horse CR Rd over Flathead Creek 020	1912	100	Fair
Horse CR Rd over Shields River 021	1986	100	Fair
Hyalite Creek Rd over Big Creek 065	1990	100	Fair
Indian Creek Rd over Shields River 027	1920	100	Fair
Lower Cottonwood R over Cottonwood Creek 028	1968	100	Fair
Lulu Pass Road over Fisher Creek	2002	100	Good
Lulu Pass Trail Rd over Polar Star Creek	2002	100	Fair
Nf 132-big Creek R over Big Creek 063	1997	100	Fair
Old Yellowstone Tr over Rock Creek	2018	100	Good
Potter Creek Rd over Potter Creek 005	1915	100	Poor
Rock Creek Rd N over Rock Creek 029	2015	100	Good
S Yellowstone St over Fleshman Creek 071	1939	100	Good
Shields River Rd E over Fiddle Creek 024	1950	100	Fair
Shields River Rd E over Shields River 023	1923	100	Poor
Shields River Rd E over Shields River Overfl 022	1938	100	Poor
Shields River Rd over Flathead Creek 009	1955	100	Fair
Shields River Rd over Shields River 010	1955	100	Fair
Shields River Rd over Shields River 011	1957	100	Fair
Shields River Road over Irrigation Canal	2019	100	Good
Six Mile Creek Rd over Six Mile Creek 055	1974	100	Fair
Soda CR Tr-republi over Woody Creek	2022	100	Good
Swandal Rd over Flathead Creek 073	1970	100	Poor
Tom Miner Creek Rd over Tom Miner Creek	2018	100	Fair
Trail Creek Rd over Irrigation Canal 001	1989	100	Fair
Mill Creek Road over Mill Creek	1971	99	Fair
Frontage Rd E 448 over Mission Creek 002	1987	92	Good
Frontage Rd E 448 over County Road 008	1987	71	Fair
Frontage Rd E 448 over Greeley Creek 017	1987	71	Fair
I 90 over Mission Creek-int Ramp	1987	61	Good
Swingley Rd over W Boulder River 038	1938	52	Poor
Big Creek Road over Big Creek	1961	50	Poor
Cottonwood Crk. Rd over Trespass Creek	1970	50	Fair
Divide Creek Road over Tom Miner Creek	1976	50	Fair
Mill Creek Rd. over Mill Creek	2009	50	Good
No Data Entered over Cedar Creek	1999	50	Fair
Road over Creek	2000	50	Good
Shields River Road over Deep Creek	2009	50	Good
Shields River Road over Shields River	1976	50	Good
Six Mile Road over Six Mile Creek	2014	50	Good
Templed Hills Rd. over Mill Creek	1952	50	Poor
W.fk.mill CR. Rd. over W.fork Mill Creek	1971	50	Fair
W.fk.mill Creek Rd over West Fork Mill Creek	1971	50	Fair
W.fork Mill Cr.rd. over W.fork Mill Creek	1971	50	Fair
Wicked Creek Road over Mill Creek	2024	50	Good
Bear Creek Road over Darroch Creek	2024	40	Good
Billy Goat Road over Smith Creek	2011	40	Good
Mission Creek Road over Mission Creek	2019	24	Good
Station Road over Boulder River	1947	1	Poor

Source: FHWA National Bridge Inventory, 2025.

Park County bridge conditions · Montana bridges by county.

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