Bridges in Petroleum County, Montana

26Total Bridges

8Good

14Fair

4Poor

Petroleum County, Montana has 26 bridges tracked in the National Bridge Inventory. Of these, 4 (15%) are rated in poor condition and 8 are rated good. The oldest bridge in Petroleum County is Old Cat Creek RD over Box Elder Creek 008, built in 1930. The longest is S 500 over Flatwillow Creek at 335.6 feet.

Bridge	Condition	Length	Traffic	Year
S 244 over Yellow Water Cr-elk CR	Poor	77.1 ft	233	1948
Hughes LN over Flatwillow Creek 016	Poor	40.0 ft	100	1950
Old Cat Creek RD over Box Elder Creek 008	Poor	78.1 ft	100	1930
Road 317 over Drag Creek	Poor	24.0 ft	2	1963
S 200 over Box Elder Creek	Fair	184.1 ft	539	1953
S 244 over Mcdonald Creek	Fair	124.7 ft	245	1941
S 244 over Pike Creek	Fair	38.1 ft	233	1939
S 244 over Drainage	Fair	38.7 ft	233	1935
S 244 over Drainage	Fair	39.0 ft	208	1940
S 244 over Flatwillow Creek	Fair	133.5 ft	208	1939
Petrolia Lake RD over Mcdonald Creek 014	Fair	78.1 ft	100	1980
Dovetail Valentine over Buffalo Creek 006	Fair	40.0 ft	100	1983
Cemetary RD over So Fk Buffalo CR 011	Fair	36.1 ft	100	1960
Teigen Loop over Mcdonald Creek 032	Fair	70.9 ft	100	2012
Blakeslee RD over Canal 030	Fair	43.0 ft	100	1978
Main ST over Mcdonald Creek 015	Fair	51.8 ft	64	1940
Petrolia Bench RD over Mcdonald Creek 003	Fair	40.0 ft	46	1940
Road 317 over Alkali Creek	Fair	24.0 ft	2	1963
Horse Camp Road over Sacagawea River	Good	79.1 ft	100	2015
Flatwillow Road over Flatwilow Creek	Good	60.0 ft	100	2023
Dovetail Valentine over Box Elder Creek 007	Good	92.8 ft	100	1982
Wildhorse RD over Box Elder Creek 012	Good	78.1 ft	100	1978
Welter Divide RD over Box Elder Creek 010	Good	80.1 ft	100	1994
Kelly RD over Flatwillow Creek 013	Good	77.4 ft	38	2013
S 500 over North Willow Creek	Good	118.1 ft	33	1975
S 500 over Flatwillow Creek	Good	335.6 ft	14	1962