Oliver County Bridge Report Card

Oliver 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

Oliver County, North Dakota

Oliver County has 23 bridges in the National Bridge Inventory, with 1 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 940 daily vehicle crossings.

23Total Bridges

1Poor (4.3%)

11Fair (47.8%)

1Scour-Critical

Quote-Ready Local Facts

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

940daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 4.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Oliver County a Bridge Condition Exposure Score of 72/100 (C). The county has 23 bridges in the National Bridge Inventory, including 1 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 940 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	11.9% of measured traffic	8.9
Scour-critical bridge share	20	4.3%	8.7
Average age vs national baseline	10	51 years vs 48 nationally	1.4
Traffic-data completeness	5	7,919 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	4.3%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	940 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNd Highway 200 over Creek — 940 vehicles/day Oldest Listed Bridge14th Street SW over Brady Creek — built in 1919 All County BridgesBrowse every bridge record in Oliver County.

Top Bridges to Watch in Oliver County

Bridge	Reason	Condition	Daily Traffic	Year Built
Nd Highway 200 over Creek	Poor condition + traffic exposure	Poor	940	1971
County Highway over Square Butte Creek	Scour-critical foundation rating	Fair	110	1960
Nd Highway 200 over Missouri River	High traffic	Fair	1,430	1971
Nd Highway 200 over Creek	High traffic	Fair	1,140	1970
Nd Highway over Creek	High traffic	Good	670	1976
Nd Highway over Square Butte Creek	High traffic	Good	650	1987
Nd Highway over Br. Square Butte Creek	High traffic	Fair	560	1948
Nd Highway 48 over Creek	High traffic	Fair	530	1970
36th Avenue SW over Square Butte Creek	High traffic	Good	385	1982
35th AVE SW over 23 1/2 Street SW	High traffic	Good	385	1993

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.