Morton County Bridge Report Card

Morton County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Morton County, North Dakota

Morton County has 269 bridges in the National Bridge Inventory, with 26 rated poor and 7 rated scour-critical. Its poor-condition share of 9.7% is at or below the 11.1% statewide average. Poor-condition bridges carry about 2,709 daily vehicle crossings.

269Total Bridges

26Poor (9.7%)

128Fair (47.6%)

7Scour-Critical

Quote-Ready Local Facts

9.7%of county bridges are in poor condition, compared with 11.1% statewide and 6.7% nationally.

2,709daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 2.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Morton County a Bridge Condition Exposure Score of 73/100 (C). The county has 269 bridges in the National Bridge Inventory, including 26 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 2,709 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	9.7%	19.3
Poor-condition traffic exposure	25	1.0% of measured traffic	0.7
Scour-critical bridge share	20	2.6%	5.2
Average age vs national baseline	10	53 years vs 48 nationally	2.1
Traffic-data completeness	5	277,349 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	9.7%
State Poor-Condition Share	11.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.6%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	2,709 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIrrsr Nd Hway 1806 over Cannonball River — 1,450 vehicles/day Oldest Listed BridgeSouth Park Street over Branch Of Knife River — built in 1916 All County BridgesBrowse every bridge record in Morton County.

Top Bridges to Watch in Morton County

Bridge	Reason	Condition	Daily Traffic	Year Built
County Highway 86 over Drainage Area	Poor condition + traffic exposure	Poor	110	1968
Irrsr Nd Hway 1806 over Cannonball River	Poor condition + traffic exposure	Poor	1,450	1962
Cr139 over Creek	Poor condition + traffic exposure	Poor	405	1960
South Park Street over Branch Of Knife River	Poor condition + traffic exposure	Poor	200	1916
67th AVE SW over Drainage Area	Poor condition + traffic exposure	Poor	85	1971
Cr138 over Drainage Area	Poor condition + traffic exposure	Poor	75	1973
County Highway 83 over Creek	Poor condition + traffic exposure	Poor	45	1979
County Highway 90 over Drainage Area	Poor condition + traffic exposure	Poor	40	1968
40th AVE over Creek	Poor condition + traffic exposure	Poor	30	1942
33rd ST over Wilson Creek	Poor condition + traffic exposure	Poor	30	1967

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.