Marinette County Bridge Report Card

Marinette County scores 64 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D64 / 100

Local infrastructure snapshot

Marinette County, Wisconsin

Marinette County has 135 bridges in the National Bridge Inventory, with 12 rated poor and 11 rated scour-critical. Its poor-condition share of 8.9% is above the 6.7% statewide average. Poor-condition bridges carry about 6,136 daily vehicle crossings.

135Total Bridges

12Poor (8.9%)

47Fair (34.8%)

11Scour-Critical

Quote-Ready Local Facts

8.9%of county bridges are in poor condition, compared with 6.7% statewide and 6.7% nationally.

6,136daily vehicle crossings are on poor-condition bridges in the county.

11bridges are rated scour-critical, or 8.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Marinette County a Bridge Condition Exposure Score of 64/100 (D). The county has 135 bridges in the National Bridge Inventory, including 12 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 6,136 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	8.9%	17.8
Poor-condition traffic exposure	25	2.0% of measured traffic	1.5
Scour-critical bridge share	20	8.1%	16.3
Average age vs national baseline	10	40 years vs 48 nationally	0.0
Traffic-data completeness	5	301,216 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	8.9%
State Poor-Condition Share	6.7%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.1%
Average Bridge Age	40 years
Poor-Condition Traffic Exposure	6,136 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCth W over Little Peshtigo River — 1,700 vehicles/day Oldest Listed BridgeCth W over Little Peshtigo River — built in 1920 All County BridgesBrowse every bridge record in Marinette County.

Top Bridges to Watch in Marinette County

Bridge	Reason	Condition	Daily Traffic	Year Built
Cth W over Little Peshtigo River	Poor condition + traffic exposure	Poor	1,700	1920
Cth C over Wausaukee River	Poor condition + traffic exposure	Poor	560	1920
Cth P over Peshtigo River	Poor condition + traffic exposure	Poor	500	1976
Lrd Glendale RD (d over Wausaukee River	Poor condition + traffic exposure	Poor	50	1920
Cth Jj over Menominee River	Poor condition + traffic exposure	Poor	900	1967
Cth C over Peshtigo River	Poor condition + traffic exposure	Poor	900	1975
Cth Z over Menominee River	Poor condition + traffic exposure	Poor	603	1972
Cth K over Pike River	Poor condition + traffic exposure	Poor	512	1978
Lrd Ferndale RD over Peshtigo River	Poor condition + traffic exposure	Poor	201	1990
Lrd ST Paul RD over The Outlet	Poor condition + traffic exposure	Poor	110	1930

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.