Every bridge in Petroleum County, Montana

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

26 inventoried bridges, busiest first

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

Petroleum County, Montana, has 26 bridges in the 2025 National Bridge Inventory: 8 rated good, 14 fair, and 4 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 200 over Box Elder Creek	1953	539	Fair
S 244 over Mcdonald Creek	1941	245	Fair
S 244 over Drainage	1935	233	Fair
S 244 over Pike Creek	1939	233	Fair
S 244 over Yellow Water Cr-elk CR	1948	233	Poor
S 244 over Drainage	1940	208	Fair
S 244 over Flatwillow Creek	1939	208	Fair
Blakeslee Rd over Canal 030	1978	100	Fair
Cemetary Rd over So Fk Buffalo CR 011	1960	100	Fair
Dovetail Valentine over Box Elder Creek 007	1982	100	Good
Dovetail Valentine over Buffalo Creek 006	1983	100	Fair
Flatwillow Road over Flatwilow Creek	2023	100	Good
Horse Camp Road over Sacagawea River	2015	100	Good
Hughes Ln over Flatwillow Creek 016	1950	100	Poor
Old Cat Creek Rd over Box Elder Creek 008	1930	100	Poor
Petrolia Lake Rd over Mcdonald Creek 014	1980	100	Fair
Teigen Loop over Mcdonald Creek 032	2012	100	Fair
Welter Divide Rd over Box Elder Creek 010	1994	100	Good
Wildhorse Rd over Box Elder Creek 012	1978	100	Good
Main St over Mcdonald Creek 015	1940	64	Fair
Petrolia Bench Rd over Mcdonald Creek 003	1940	46	Fair
Kelly Rd over Flatwillow Creek 013	2013	38	Good
S 500 over North Willow Creek	1975	33	Good
S 500 over Flatwillow Creek	1962	14	Good
Road 317 over Alkali Creek	1963	2	Fair
Road 317 over Drag Creek	1963	2	Poor