US Bridges

I-90 WB over ST Joseph River

Fair

St. Joseph County, Indiana · 00.87 W SR 933 · Structure no. 047700

Built
1956
69 years old, rebuilt 1987
Condition
Fair
inspected July 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
492 ft
4 main spans
Daily traffic
13,860
2011 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 WB over ST Joseph River is a steel continuous girder and floorbeam system carrying I-90 WB over ST Joseph River in St. Joseph County, Indiana. It was built in 1956 and reconstructed in 1987, so it is 69 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 13,860 vehicles a day, roughly 14% of them trucks, projected to reach 32,257 by 2031. The structure is 492 ft (149.9 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-90 WB
CrossesST Joseph River
Location00.87 W SR 933
RouteInterstate 90
CountySt. Joseph County
StateIndiana
Coordinates41.72262, -86.26714
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.9 US tons
Inventory rating33.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length492 ft (149.9 m)
Longest span125 ft (38 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,860 (2011)
Projected traffic32,257 by 2031
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-90 WB over ST Joseph River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1987.

What condition is I-90 WB over ST Joseph River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does I-90 WB over ST Joseph River carry?

About 13,860 vehicles per day (2011 count), of which roughly 14% are trucks.

How long is I-90 WB over ST Joseph River?

The structure is 492 ft (149.9 m) long with a longest span of 125 ft (38 m) and a deck 45 ft wide.

Who owns I-90 WB over ST Joseph River?

It is owned by the State Toll Authority.