Bowman County Bridge Report Card

Bowman County scores 84 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B84 / 100

Local infrastructure snapshot

Bowman County, North Dakota

Bowman County has 69 bridges in the National Bridge Inventory, with 3 rated poor and 1 rated scour-critical. Its poor-condition share of 4.3% is at or below the 11.1% statewide average. Poor-condition bridges carry about 1,125 daily vehicle crossings.

69Total Bridges

3Poor (4.3%)

22Fair (31.9%)

1Scour-Critical

Quote-Ready Local Facts

4.3%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

1,125daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 1.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Bowman County a Bridge Condition Exposure Score of 84/100 (B). The county has 69 bridges in the National Bridge Inventory, including 3 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 1,125 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	4.3%	8.7
Poor-condition traffic exposure	25	5.5% of measured traffic	4.2
Scour-critical bridge share	20	1.4%	2.9
Average age vs national baseline	10	42 years vs 48 nationally	0.0
Traffic-data completeness	5	20,284 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	4.3%
State Poor-Condition Share	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.4%
Average Bridge Age	42 years
Poor-Condition Traffic Exposure	1,125 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS Highway 85 over Spring Creek — 1,070 vehicles/day Oldest Listed Bridge135th AVE SW over Cedar Creek — built in 1922 All County BridgesBrowse every bridge record in Bowman County.

Top Bridges to Watch in Bowman County

Bridge	Reason	Condition	Daily Traffic	Year Built
US Highway 85 over Spring Creek	Poor condition + traffic exposure	Poor	1,070	1953
Hamilton Street over Buffalo Creek	Poor condition + traffic exposure	Poor	30	1958
169th Ave. SW over Sevenmile Creek	Poor condition + traffic exposure	Poor	25	1970
141st Avenue over North Fork Grand River	Scour-critical foundation rating	Good	30	1992
US Highway 85 over Bnsf Railroad Sep	High traffic	Good	3,250	2000
US Highway 85 over Creek	High traffic	Fair	1,130	1966
US Highway 85 over Creek	High traffic	Good	1,050	1966
US Highway 85 over Creek	High traffic	Fair	1,050	1966
US Highway 85 over Creek	High traffic	Fair	1,030	1966
US Highway 85 over Creek	High traffic	Fair	1,030	1966

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.