Mountrail County Bridge Report Card

Mountrail County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A93 / 100

Local infrastructure snapshot

Mountrail County, North Dakota

Mountrail County has 28 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 3.6% is at or below the 11.1% statewide average. Poor-condition bridges carry about 20 daily vehicle crossings.

28Total Bridges

1Poor (3.6%)

12Fair (42.9%)

0Scour-Critical

Quote-Ready Local Facts

3.6%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

20daily 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 Mountrail County a Bridge Condition Exposure Score of 93/100 (A). The county has 28 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 20 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	0.1% of measured traffic	0.0
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	35 years vs 48 nationally	0.0
Traffic-data completeness	5	33,904 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	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	35 years
Poor-Condition Traffic Exposure	20 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCounty Highway over Cottonwood Lake — 20 vehicles/day Oldest Listed BridgeCounty Highway over White Earth River — built in 1941 All County BridgesBrowse every bridge record in Mountrail County.

Top Bridges to Watch in Mountrail County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Highway over Cottonwood Lake	Poor condition + traffic exposure	Poor	20	1946
Irrfb Nd Hiway 23 over Crane Creek	High traffic	Good	7,340	2012
Irrfb Nd Hiway 23 over Creek	High traffic	Good	5,510	1995
Irrfb Nd Hiway 23 over Shell Creek	High traffic	Good	4,885	2012
Irrfb Nd HWY 23 over Creek	High traffic	Good	3,165	2013
Irrfb Nd Hiway 23 over Creek	High traffic	Good	2,600	1993
Nd Highway 8 over Little Knife River	High traffic	Good	2,110	1985
Irrfb Nd Hiway 23 over Creek	High traffic	Fair	1,920	1953
US Highway 2 over White Earth River	High traffic	Fair	1,575	2005
US Highway 2 over White Earth River	High traffic	Fair	1,480	1980

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.