St. Croix County Bridge Report Card

St. Croix County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B88 / 100

Local infrastructure snapshot

St. Croix County, Wisconsin

St. Croix County has 297 bridges in the National Bridge Inventory, with 10 rated poor and 3 rated scour-critical. Its poor-condition share of 3.4% is at or below the 6.7% statewide average. Poor-condition bridges carry about 52,470 daily vehicle crossings.

297Total Bridges

10Poor (3.4%)

114Fair (38.4%)

3Scour-Critical

Quote-Ready Local Facts

3.4%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

52,470daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 1.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives St. Croix County a Bridge Condition Exposure Score of 88/100 (B). The county has 297 bridges in the National Bridge Inventory, including 10 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 52,470 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	3.4%	6.7
Poor-condition traffic exposure	25	3.8% of measured traffic	2.9
Scour-critical bridge share	20	1.0%	2.0
Average age vs national baseline	10	40 years vs 48 nationally	0.0
Traffic-data completeness	5	1,366,059 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	3.4%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.0%
Average Bridge Age	40 years
Poor-Condition Traffic Exposure	52,470 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIH 94 EB over Eau Galle River — 17,800 vehicles/day Oldest Listed BridgeCth Q over Willow River — built in 1915 All County BridgesBrowse every bridge record in St. Croix County.

Top Bridges to Watch in St. Croix County

Bridge	Reason	Condition	Daily Traffic	Year Built
IH 94 EB over Eau Galle River	Poor condition + traffic exposure	Poor	17,800	1958
Lrd 11th ST over IH 94-ush 12-sth 35	Poor condition + traffic exposure	Poor	13,600	1973
Cth A over Willow River	Poor condition + traffic exposure	Poor	9,200	1980
Ush 63 over Br Willow River	Poor condition + traffic exposure	Poor	4,800	1962
Sth 65 S over Sth 35	Poor condition + traffic exposure	Poor	4,200	1992
Cth K over Br Willow River	Poor condition + traffic exposure	Poor	1,300	1935
Lrd Trout Brook RD over Willow River	Poor condition + traffic exposure	Poor	920	1975
Lrd 60th AVE over Rush River - Dry Streamb	Poor condition + traffic exposure	Poor	300	1980
Cth Y over Rush River	Poor condition + traffic exposure	Poor	250	1964
Lrd 30th AVE over Br Rush River	Poor condition + traffic exposure	Poor	100	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.