Roosevelt County Bridge Report Card

Roosevelt County scores 64 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D64 / 100

Local infrastructure snapshot

Roosevelt County, Montana

Roosevelt County has 57 bridges in the National Bridge Inventory, with 7 rated poor and 1 rated scour-critical. Its poor-condition share of 12.3% is above the 7.4% statewide average. Poor-condition bridges carry about 4,624 daily vehicle crossings.

57Total Bridges

7Poor (12.3%)

36Fair (63.2%)

1Scour-Critical

Quote-Ready Local Facts

12.3%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

4,624daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 1.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Roosevelt County a Bridge Condition Exposure Score of 64/100 (D). The county has 57 bridges in the National Bridge Inventory, including 7 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 4,624 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	12.3%	24.6
Poor-condition traffic exposure	25	10.2% of measured traffic	7.7
Scour-critical bridge share	20	1.8%	3.5
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	45,192 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	12.3%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.8%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	4,624 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIRR - US 2 over Chelsea Creek — 2,054 vehicles/day Oldest Listed BridgeIRR - S 13 over Sprague Coulee — built in 1931 All County BridgesBrowse every bridge record in Roosevelt County.

Top Bridges to Watch in Roosevelt County

Bridge	Reason	Condition	Daily Traffic	Year Built
IRR - US 2 over Chelsea Creek	Poor condition + traffic exposure	Poor	2,054	1960
IRR - US 2 over Drainage	Poor condition + traffic exposure	Poor	1,452	1970
Poplar River RD over Poplar River 015	Poor condition + traffic exposure	Poor	563	1985
IRR - S 13 over Sprague Coulee	Poor condition + traffic exposure	Poor	229	1931
IRR - S 13 over W Fork Poplar R Ovrflow	Poor condition + traffic exposure	Poor	229	1932
IRR - S 251 over Hay Creek	Poor condition + traffic exposure	Poor	88	1950
County Road 641 over Sheep Creek 002	Poor condition + traffic exposure	Poor	9	1986
County Road 249 over Sheep Creek 061	Scour-critical foundation rating	Good	100	1999
IRR - US 2 over Mosquito Creek	High traffic	Fair	4,269	1986
IRR - US 2 over Little Wolf Creek	High traffic	Fair	4,269	1988

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.