LaMoure County Bridge Report Card

LaMoure County scores 70 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C70 / 100

Local infrastructure snapshot

LaMoure County, North Dakota

LaMoure County has 60 bridges in the National Bridge Inventory, with 7 rated poor and 1 rated scour-critical. Its poor-condition share of 11.7% is above the 11.1% statewide average. Poor-condition bridges carry about 554 daily vehicle crossings.

60Total Bridges

7Poor (11.7%)

24Fair (40.0%)

1Scour-Critical

Quote-Ready Local Facts

11.7%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

554daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 1.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives LaMoure County a Bridge Condition Exposure Score of 70/100 (C). The county has 60 bridges in the National Bridge Inventory, including 7 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 554 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	11.7%	23.3
Poor-condition traffic exposure	25	1.8% of measured traffic	1.4
Scour-critical bridge share	20	1.7%	3.3
Average age vs national baseline	10	53 years vs 48 nationally	2.1
Traffic-data completeness	5	30,109 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	11.7%
State Poor-Condition Share	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.7%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	554 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNd Highway 46 over James River — 310 vehicles/day Oldest Listed BridgeCounty Highway over James River — built in 1908 All County BridgesBrowse every bridge record in LaMoure County.

Top Bridges to Watch in LaMoure County

Bridge	Reason	Condition	Daily Traffic	Year Built
Nd Highway 46 over James River	Poor condition + traffic exposure	Poor	310	1964
County Highway over James River	Poor condition + traffic exposure	Poor	140	1950
County Road over James River	Poor condition + traffic exposure	Poor	50	1910
County Road over Maple River	Poor condition + traffic exposure	Poor	24	1935
County Highway over James River	Poor condition + traffic exposure	Poor	18	1908
County Road over Maple Creek	Poor condition + traffic exposure	Poor	10	1920
County Road over Cottonwood Creek	Poor condition + traffic exposure	Poor	2	1950
73rd AVE SE over Cottonwood Creek	Scour-critical foundation rating	Good	18	2020
US Highway 281 over Bonehill Creek	High traffic	Fair	16,250	1990
Nd Highway 13 over Maple Creek	High traffic	Good	1,725	2004

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.