Broadwater County Bridge Report Card

Broadwater County scores 72 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C72 / 100

Local infrastructure snapshot

Broadwater County, Montana

Broadwater County has 37 bridges in the National Bridge Inventory, with 4 rated poor and 1 rated scour-critical. Its poor-condition share of 10.8% is above the 7.4% statewide average. Poor-condition bridges carry about 705 daily vehicle crossings.

37Total Bridges

4Poor (10.8%)

23Fair (62.2%)

1Scour-Critical

Quote-Ready Local Facts

10.8%of county bridges are in poor condition, compared with 7.4% statewide and 6.7% nationally.

705daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 2.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Broadwater County a Bridge Condition Exposure Score of 72/100 (C). The county has 37 bridges in the National Bridge Inventory, including 4 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 705 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	10.8%	21.6
Poor-condition traffic exposure	25	1.2% of measured traffic	0.9
Scour-critical bridge share	20	2.7%	5.4
Average age vs national baseline	10	36 years vs 48 nationally	0.0
Traffic-data completeness	5	57,328 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	10.8%
State Poor-Condition Share	7.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.7%
Average Bridge Age	36 years
Poor-Condition Traffic Exposure	705 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeS 285 over Toston Canal — 422 vehicles/day Oldest Listed BridgeHWY 287 Bypass over Missouri River 019 — built in 1920 All County BridgesBrowse every bridge record in Broadwater County.

Top Bridges to Watch in Broadwater County

Bridge	Reason	Condition	Daily Traffic	Year Built
HWY 287 Bypass over Missouri River 019	Poor condition + traffic exposure	Poor	178	1920
S 285 over Toston Canal	Poor condition + traffic exposure	Poor	422	1948
Flynn LN over Broadwater Missouri 006	Poor condition + traffic exposure	Poor	100	1976
Lower Ray CR Road over Cf Wma - Eastside Canal	Poor condition + traffic exposure	Poor	5	1974
Us287 over Beaver Creek	High traffic	Fair	6,930	1992
US 12 over Missouri River	High traffic	Fair	6,843	1935
US 287 over Int Three Forks I 90	High traffic	Fair	6,444	2012
US 287 over Mud Spring Gulch	High traffic	Good	6,444	2013
US 287 over Deep Creek	High traffic	Fair	5,485	2012
US 287 over Six Mile Creek	High traffic	Good	5,250	2020

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.