US Bridges

Fir Road over I-90 Eb/Wb

Good

St. Joseph County, Indiana · 01.74 E SR 23 · Structure no. 047850

Built
1956
69 years old, rebuilt 2018
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
249 ft
4 main spans
Daily traffic
7,503
2014 count
Owner
Toll Authority
State Toll Authority

About this bridge

Fir Road over I-90 Eb/Wb is a steel stringer/multi-beam or girder carrying Fir Road over I-90 Eb/Wb in St. Joseph County, Indiana. It was built in 1956 and reconstructed in 2018, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,503 vehicles a day, roughly 7% of them trucks, projected to reach 23,282 by 2031. The structure is 249 ft (75.8 m) long and 34 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesFir Road
CrossesI-90 Eb/Wb
Location01.74 E SR 23
RouteCity Street 0
StateIndiana
Coordinates41.71929, -86.16341
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length249 ft (75.8 m)
Longest span75 ft (22.8 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,503 (2014)
Projected traffic23,282 by 2031
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

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 Fir Road over I-90 Eb/Wb built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2018.

What condition is Fir Road over I-90 Eb/Wb in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Fir Road over I-90 Eb/Wb carry?

About 7,503 vehicles per day (2014 count), of which roughly 7% are trucks.

How long is Fir Road over I-90 Eb/Wb?

The structure is 249 ft (75.8 m) long with a longest span of 75 ft (22.8 m) and a deck 34 ft wide.

Who owns Fir Road over I-90 Eb/Wb?

It is owned by the State Toll Authority.