Powell County Bridge Report Card

Powell County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B80 / 100

Local infrastructure snapshot

Powell County, Montana

Powell County has 113 bridges in the National Bridge Inventory, with 7 rated poor and 0 rated scour-critical. Its poor-condition share of 6.2% is at or below the 7.4% statewide average. Poor-condition bridges carry about 22,075 daily vehicle crossings.

113Total Bridges

7Poor (6.2%)

70Fair (61.9%)

0Scour-Critical

Quote-Ready Local Facts

6.2%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

22,075daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Powell County a Bridge Condition Exposure Score of 80/100 (B). The county has 113 bridges in the National Bridge Inventory, including 7 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 22,075 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	6.2%	12.4
Poor-condition traffic exposure	25	10.0% of measured traffic	7.5
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	45 years vs 48 nationally	0.0
Traffic-data completeness	5	220,834 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	6.2%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	45 years
Poor-Condition Traffic Exposure	22,075 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI 90 EB over Rr — 5,992 vehicles/day Oldest Listed BridgeTrout Creek RD over Little Blackfoot R 018 — built in 1908 All County BridgesBrowse every bridge record in Powell County.

Top Bridges to Watch in Powell County

Bridge	Reason	Condition	Daily Traffic	Year Built
I 90 EB over Rr	Poor condition + traffic exposure	Poor	5,992	1973
I 90 over Rr	Poor condition + traffic exposure	Poor	5,992	1973
I 90 over Int W Garrison-rr	Poor condition + traffic exposure	Poor	5,232	1979
Main ST over Clark Fork River	Poor condition + traffic exposure	Poor	2,330	1949
S 141 over Nevada Creek	Poor condition + traffic exposure	Poor	1,594	1936
S Frontage RD 011 over Dempsey Creek 059	Poor condition + traffic exposure	Poor	916	1930
Chokecherry LN over Little Blackfoot R 027	Poor condition + traffic exposure	Poor	19	1914
I 90 over Dempsey Creek	High traffic	Fair	10,708	1973
I 90 over Jr Grade Sep	High traffic	Fair	10,463	1961
I 90 over Jr Grade Sep	High traffic	Fair	10,463	1961

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.