St. Joseph County Bridge Report Card

St. Joseph County scores 60 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D60 / 100

Local infrastructure snapshot

St. Joseph County, Michigan

St. Joseph County has 132 bridges in the National Bridge Inventory, with 16 rated poor and 6 rated scour-critical. Its poor-condition share of 12.1% is above the 11.0% statewide average. Poor-condition bridges carry about 19,417 daily vehicle crossings.

132Total Bridges

16Poor (12.1%)

77Fair (58.3%)

6Scour-Critical

Quote-Ready Local Facts

12.1%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

19,417daily vehicle crossings are on poor-condition bridges in the county.

6bridges are rated scour-critical, or 4.5% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives St. Joseph County a Bridge Condition Exposure Score of 60/100 (D). The county has 132 bridges in the National Bridge Inventory, including 16 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 19,417 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	12.1%	24.2
Poor-condition traffic exposure	25	8.8% of measured traffic	6.6
Scour-critical bridge share	20	4.5%	9.1
Average age vs national baseline	10	46 years vs 48 nationally	0.0
Traffic-data completeness	5	221,242 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	12.1%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.5%
Average Bridge Age	46 years
Poor-Condition Traffic Exposure	19,417 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeHoffman Street over Rockey River — 4,600 vehicles/day Oldest Listed BridgeCovered Bridge RD over ST Joseph River — built in 1885 All County BridgesBrowse every bridge record in St. Joseph County.

Top Bridges to Watch in St. Joseph County

Bridge	Reason	Condition	Daily Traffic	Year Built
M-60 & M-66 over Nottawa Creek	Poor condition + traffic exposure	Poor	3,200	1931
Hoffman Street over Rockey River	Poor condition + traffic exposure	Poor	4,600	1960
Sixth Street over ST Joseph River	Poor condition + traffic exposure	Poor	2,400	1965
Constantine Street over ST Joseph River	Poor condition + traffic exposure	Poor	1,493	1972
Farrand Road over ST Joseph River	Poor condition + traffic exposure	Poor	1,482	1965
Nottawa Road over Wood Lake Drain	Poor condition + traffic exposure	Poor	1,455	1966
Fawn River Road over Fawn River	Poor condition + traffic exposure	Poor	1,441	1964
North Burr Oak RD over Little Swan Creek	Poor condition + traffic exposure	Poor	824	1963
Findley Road over Prairie River	Poor condition + traffic exposure	Poor	733	1979
Blue School Road over White Pigeon River	Poor condition + traffic exposure	Poor	502	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.