Musselshell County Bridge Report Card

Musselshell County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B85 / 100

Local infrastructure snapshot

Musselshell County, Montana

Musselshell County has 28 bridges in the National Bridge Inventory, with 1 rated poor and 1 rated scour-critical. Its poor-condition share of 3.6% is at or below the 7.4% statewide average. Poor-condition bridges carry about 100 daily vehicle crossings.

28Total Bridges

1Poor (3.6%)

11Fair (39.3%)

1Scour-Critical

Quote-Ready Local Facts

3.6%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

100daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 3.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Musselshell County a Bridge Condition Exposure Score of 85/100 (B). The county has 28 bridges in the National Bridge Inventory, including 1 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 100 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	3.6%	7.1
Poor-condition traffic exposure	25	0.7% of measured traffic	0.5
Scour-critical bridge share	20	3.6%	7.1
Average age vs national baseline	10	40 years vs 48 nationally	0.0
Traffic-data completeness	5	14,483 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	3.6%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.6%
Average Bridge Age	40 years
Poor-Condition Traffic Exposure	100 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeHarvey RD over Musselshell River 018 — 100 vehicles/day Oldest Listed BridgeMusselshell RD over Musselshell River 015 — built in 1916 All County BridgesBrowse every bridge record in Musselshell County.

Top Bridges to Watch in Musselshell County

Bridge	Reason	Condition	Daily Traffic	Year Built
Harvey RD over Musselshell River 018	Poor condition + traffic exposure	Poor	100	1916
4-h RD over Musselshell River 008	Scour-critical foundation rating	Fair	208	1970
US 87 over Musselshell River	High traffic	Good	2,799	1996
US 87 over Park Coulee	High traffic	Good	2,548	1995
US 87 over Razor Creek	High traffic	Good	2,548	1995
US 87 over South Willow Creek	High traffic	Good	1,223	1976
US 12 over Willow Creek	High traffic	Fair	712	1999
US 12 over Drainage	High traffic	Good	480	2003
US 12 over Dean Creek	High traffic	Fair	441	1935
US 12 over Currant Creek	High traffic	Fair	441	1936

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.