Carlton County Bridge Report Card

Carlton County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C77 / 100

Local infrastructure snapshot

Carlton County, Minnesota

Carlton County has 148 bridges in the National Bridge Inventory, with 13 rated poor and 1 rated scour-critical. Its poor-condition share of 8.8% is above the 4.5% statewide average. Poor-condition bridges carry about 23,035 daily vehicle crossings.

148Total Bridges

13Poor (8.8%)

63Fair (42.6%)

1Scour-Critical

Quote-Ready Local Facts

8.8%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

23,035daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Carlton County a Bridge Condition Exposure Score of 77/100 (C). The county has 148 bridges in the National Bridge Inventory, including 13 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 23,035 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	8.8%	17.6
Poor-condition traffic exposure	25	4.9% of measured traffic	3.7
Scour-critical bridge share	20	0.7%	1.4
Average age vs national baseline	10	39 years vs 48 nationally	0.0
Traffic-data completeness	5	472,477 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	8.8%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.7%
Average Bridge Age	39 years
Poor-Condition Traffic Exposure	23,035 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI 35 over Moose Horn River — 8,200 vehicles/day Oldest Listed BridgeCsah 6 over Blackhoof Creek — built in 1918 All County BridgesBrowse every bridge record in Carlton County.

Top Bridges to Watch in Carlton County

Bridge	Reason	Condition	Daily Traffic	Year Built
I 35 over Moose Horn River	Poor condition + traffic exposure	Poor	8,200	1968
I 35 over Moose Horn River	Poor condition + traffic exposure	Poor	8,200	1968
Csah 61 over Bnsf Rr	Poor condition + traffic exposure	Poor	2,884	1979
Csah 26 over I 35	Poor condition + traffic exposure	Poor	1,343	1965
Csah 1 over Mp; L Canal	Poor condition + traffic exposure	Poor	1,006	1976
Csah 6 over Blackhoof Creek	Poor condition + traffic exposure	Poor	420	1918
Csah 12 over Kettle River	Poor condition + traffic exposure	Poor	300	1964
Csah 4 over Kettle River	Poor condition + traffic exposure	Poor	278	1935
M 1 over Tamarack River	Poor condition + traffic exposure	Poor	180	1940
CR 138 over Moose Horn River	Poor condition + traffic exposure	Poor	164	1978

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.