Chisago County Bridge Report Card

Chisago County scores 95 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A95 / 100

Local infrastructure snapshot

Chisago County, Minnesota

Chisago County has 61 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 1.6% is at or below the 4.5% statewide average. Poor-condition bridges carry about 5,686 daily vehicle crossings.

61Total Bridges

1Poor (1.6%)

28Fair (45.9%)

0Scour-Critical

Quote-Ready Local Facts

1.6%of county bridges are in poor condition, compared with 4.5% statewide and 6.7% nationally.

5,686daily 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 Chisago County a Bridge Condition Exposure Score of 95/100 (A). The county has 61 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 5,686 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	1.6%	3.3
Poor-condition traffic exposure	25	2.5% of measured traffic	1.9
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	39 years vs 48 nationally	0.0
Traffic-data completeness	5	227,292 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	1.6%
State Poor-Condition Share	4.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	39 years
Poor-Condition Traffic Exposure	5,686 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeMn 243 over ST Croix River — 5,686 vehicles/day Oldest Listed BridgeM 4 over W Br Sunrise River — built in 1925 All County BridgesBrowse every bridge record in Chisago County.

Top Bridges to Watch in Chisago County

Bridge	Reason	Condition	Daily Traffic	Year Built
Mn 243 over ST Croix River	Poor condition + traffic exposure	Poor	5,686	1953
I 35 over Rush Creek	High traffic	Fair	27,920	1967
Mn 95 over I 35	High traffic	Good	20,467	2010
US 8 over Channel	High traffic	Good	19,638	2012
US 61 over I 35	High traffic	Fair	14,200	1967
US 61 over S Br Sunrise River	High traffic	Good	14,200	1967
US 8 over Center Lake Channel	High traffic	Fair	13,800	2005
US 8 over ST Croix River	High traffic	Fair	13,300	1955
Mn 95 over N Br Sunrise River	High traffic	Fair	8,536	1947
Csah 30 over N Br Sunrise River	High traffic	Fair	7,049	1950

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.