Koochiching County Bridge Report Card

Koochiching County scores 83 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B83 / 100

Local infrastructure snapshot

Koochiching County, Minnesota

Koochiching County has 98 bridges in the National Bridge Inventory, with 6 rated poor and 0 rated scour-critical. Its poor-condition share of 6.1% is above the 4.5% statewide average. Poor-condition bridges carry about 2,422 daily vehicle crossings.

98Total Bridges

6Poor (6.1%)

41Fair (41.8%)

0Scour-Critical

Quote-Ready Local Facts

6.1%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

2,422daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Koochiching County a Bridge Condition Exposure Score of 83/100 (B). The county has 98 bridges in the National Bridge Inventory, including 6 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 2,422 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	6.1%	12.2
Poor-condition traffic exposure	25	6.6% of measured traffic	4.9
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	38 years vs 48 nationally	0.0
Traffic-data completeness	5	36,974 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	6.1%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	38 years
Poor-Condition Traffic Exposure	2,422 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 71 over Little Fork River — 1,458 vehicles/day Oldest Listed BridgeUS 53 over Rainy River — built in 1912 All County BridgesBrowse every bridge record in Koochiching County.

Top Bridges to Watch in Koochiching County

Bridge	Reason	Condition	Daily Traffic	Year Built
US 71 over Little Fork River	Poor condition + traffic exposure	Poor	1,458	1980
US 53 over Rainy River	Poor condition + traffic exposure	Poor	703	1912
Csah 98 over Rat Root River	Poor condition + traffic exposure	Poor	110	1967
CR 101 over Black River	Poor condition + traffic exposure	Poor	97	1922
CR 145 over Rat Root River	Poor condition + traffic exposure	Poor	44	1963
CR 61 over Dinner Creek	Poor condition + traffic exposure	Poor	10	1993
Mn 11 over Stream	High traffic	Fair	5,227	1949
Mn 11 over Dwp Rr	High traffic	Good	3,565	2018
US 53 over Rat Root River	High traffic	Fair	2,833	1976
Mn 11 over Jack Fish Bay	High traffic	Good	2,016	2012

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.