Cass County Bridge Report Card

Cass 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

Cass County, North Dakota

Cass County has 369 bridges in the National Bridge Inventory, with 12 rated poor and 1 rated scour-critical. Its poor-condition share of 3.3% is at or below the 11.1% statewide average. Poor-condition bridges carry about 604 daily vehicle crossings.

369Total Bridges

12Poor (3.3%)

159Fair (43.1%)

1Scour-Critical

Quote-Ready Local Facts

3.3%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

604daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Cass County a Bridge Condition Exposure Score of 93/100 (A). The county has 369 bridges in the National Bridge Inventory, including 12 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 604 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	3.3%	6.5
Poor-condition traffic exposure	25	0.1% of measured traffic	0.0
Scour-critical bridge share	20	0.3%	0.5
Average age vs national baseline	10	36 years vs 48 nationally	0.0
Traffic-data completeness	5	1,189,476 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	3.3%
State Poor-Condition Share	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.3%
Average Bridge Age	36 years
Poor-Condition Traffic Exposure	604 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNd Highway 10 over Swan Creek — 210 vehicles/day Oldest Listed BridgeNd Highway 10 over Creek — built in 1931 All County BridgesBrowse every bridge record in Cass County.

Top Bridges to Watch in Cass County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Highway over Branch Of Elm River	Poor condition + traffic exposure	Poor	10	1968
Nd Highway 10 over Swan Creek	Poor condition + traffic exposure	Poor	210	1959
County Highway over Sheyenne River	Poor condition + traffic exposure	Poor	140	1979
County Highway over Red River Of The North	Poor condition + traffic exposure	Poor	90	1949
County Highway over Creek	Poor condition + traffic exposure	Poor	24	1976
County Highway over Maple River	Poor condition + traffic exposure	Poor	20	1950
County Highway over Swan Creek	Poor condition + traffic exposure	Poor	20	1955
County Highway over Co Drain 15	Poor condition + traffic exposure	Poor	20	1955
County Highway over I-94/MAPLE River Sep	Poor condition + traffic exposure	Poor	20	1960
County Highway over County Drain 12	Poor condition + traffic exposure	Poor	20	1961

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.