St. Joseph County Bridge Report Card

St. Joseph 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

St. Joseph County, Indiana

St. Joseph County has 227 bridges in the National Bridge Inventory, with 11 rated poor and 6 rated scour-critical. Its poor-condition share of 4.8% is at or below the 5.3% statewide average. Poor-condition bridges carry about 59,131 daily vehicle crossings.

227Total Bridges

11Poor (4.8%)

107Fair (47.1%)

6Scour-Critical

Quote-Ready Local Facts

4.8%of county bridges are in poor condition, compared with 5.3% statewide and 6.7% nationally.

59,131daily vehicle crossings are on poor-condition bridges in the county.

6bridges are rated scour-critical, or 2.6% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives St. Joseph County a Bridge Condition Exposure Score of 83/100 (B). The county has 227 bridges in the National Bridge Inventory, including 11 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 59,131 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	4.8%	9.7
Poor-condition traffic exposure	25	2.8% of measured traffic	2.1
Scour-critical bridge share	20	2.6%	5.3
Average age vs national baseline	10	45 years vs 48 nationally	0.0
Traffic-data completeness	5	2,107,817 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	4.8%
State Poor-Condition Share	5.3%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.6%
Average Bridge Age	45 years
Poor-Condition Traffic Exposure	59,131 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeUS 20 over Clover Road — 38,231 vehicles/day Oldest Listed BridgeSample ST over St. Joseph River — built in 1900 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
Elm RD over Grimes Ditch	Poor condition + traffic exposure	Poor	1,207	1979
Shively RD over Kline Ditch	Poor condition + traffic exposure	Poor	242	1935
US 20 over Clover Road	Poor condition + traffic exposure	Poor	38,231	1991
Mayflower Road over Ardmore Trail	Poor condition + traffic exposure	Poor	9,063	1970
Mayflower Road over Conrail Rr	Poor condition + traffic exposure	Poor	9,063	1970
Peach RD over Place Ditch	Poor condition + traffic exposure	Poor	391	1971
Walnut RD over Potato Creek	Poor condition + traffic exposure	Poor	386	1968
Inwood RD over Geyer Ditch	Poor condition + traffic exposure	Poor	176	1925
Darden RD over Geyer Ditch	Poor condition + traffic exposure	Poor	157	1971
Quinn RD over Pine Creek	Poor condition + traffic exposure	Poor	118	1993

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.