US Bridges

I-90 to US 31 Ramp over I-90 Eb/Wb

Fair

St. Joseph County, Indiana · 00.09 E US 31 · Structure no. 047620

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
252 ft
4 main spans
Daily traffic
4,250
2015 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 to US 31 Ramp over I-90 Eb/Wb is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 to US 31 Ramp over I-90 Eb/Wb in St. Joseph County, Indiana. It was built in 1980, so it is 45 years old, younger 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 6 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 4,250 vehicles a day, roughly 17% of them trucks, projected to reach 16,959 by 2031. The structure is 252 ft (76.8 m) long and 57 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-90 to US 31 Ramp
CrossesI-90 Eb/Wb
Location00.09 E US 31
RouteInterstate 90
CountySt. Joseph County
StateIndiana
Coordinates41.73039, -86.33347
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span83 ft (25.2 m)
Deck width57 ft (17.4 m)
Roadway width54 ft (16.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,250 (2015)
Projected traffic16,959 by 2031
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 to US 31 Ramp over I-90 Eb/Wb built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-90 to US 31 Ramp over I-90 Eb/Wb 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 to US 31 Ramp over I-90 Eb/Wb carry?

About 4,250 vehicles per day (2015 count), of which roughly 17% are trucks.

How long is I-90 to US 31 Ramp over I-90 Eb/Wb?

The structure is 252 ft (76.8 m) long with a longest span of 83 ft (25.2 m) and a deck 57 ft wide.

Who owns I-90 to US 31 Ramp over I-90 Eb/Wb?

It is owned by the State Toll Authority.