Dunn County Bridge Report Card

Dunn County scores 96 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A96 / 100

Local infrastructure snapshot

Dunn County, North Dakota

Dunn County has 73 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 1.4% is at or below the 11.1% statewide average. Poor-condition bridges carry about 570 daily vehicle crossings.

73Total Bridges

1Poor (1.4%)

26Fair (35.6%)

0Scour-Critical

Quote-Ready Local Facts

1.4%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

570daily 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 Dunn County a Bridge Condition Exposure Score of 96/100 (A). The county has 73 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 570 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	1.4%	2.7
Poor-condition traffic exposure	25	1.8% of measured traffic	1.3
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	37 years vs 48 nationally	0.0
Traffic-data completeness	5	32,257 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	1.4%
State Poor-Condition Share	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	37 years
Poor-Condition Traffic Exposure	570 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNd Highway 200 over Creek — 570 vehicles/day Oldest Listed Bridge3rd ST SW over Spring Creek — built in 1932 All County BridgesBrowse every bridge record in Dunn County.

Top Bridges to Watch in Dunn County

Bridge	Reason	Condition	Daily Traffic	Year Built
Nd Highway 200 over Creek	Poor condition + traffic exposure	Poor	570	1957
Nd Highway 200 over Spring Creek	High traffic	Good	3,700	2017
Nd Highway 200 over Spring Creek	High traffic	Good	2,980	2016
Nd Highway 22 over Spring Creek	High traffic	Fair	2,420	1986
Nd Highway 22 over Jim Creek	High traffic	Good	2,175	2011
Nd Highway 22 over Russian Spring Creek	High traffic	Fair	1,740	1953
Nd Highway 22 over Creek	High traffic	Good	1,680	1986
Nd Highway 22 over Murphy Creek	High traffic	Good	1,630	1986
Nd Highway 22 over Creek	High traffic	Fair	1,610	1986
Nd Highway 22 over Crooked Creek	High traffic	Fair	1,510	1952

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.