US Bridges

US 421 over I-90 Eb/Wb

Good

LaPorte County, Indiana · 02.02 N SR 2 · Structure no. 032480

Built
1956
69 years old, rebuilt 2003
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
250 ft
5 main spans
Daily traffic
12,162
2011 count
Owner
Toll Authority
State Toll Authority

About this bridge

US 421 over I-90 Eb/Wb is a steel stringer/multi-beam or girder carrying US 421 over I-90 Eb/Wb in LaPorte County, Indiana. It was built in 1956 and reconstructed in 2003, 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 12,162 vehicles a day, roughly 24% of them trucks, projected to reach 19,149 by 2031. The structure is 250 ft (76.1 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 421
CrossesI-90 Eb/Wb
Location02.02 N SR 2
RouteU.S. Route 421
StateIndiana
Coordinates41.59062, -86.89706
Functional classRural Principal Arterial - Other

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 inspectionJuly 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 rating61.2 US tons
Inventory rating36.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length250 ft (76.1 m)
Longest span70 ft (21.3 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,162 (2011)
Projected traffic19,149 by 2031
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 US 421 over I-90 Eb/Wb built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2003.

What condition is US 421 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 July 2023.

How much traffic does US 421 over I-90 Eb/Wb carry?

About 12,162 vehicles per day (2011 count), of which roughly 24% are trucks.

How long is US 421 over I-90 Eb/Wb?

The structure is 250 ft (76.1 m) long with a longest span of 70 ft (21.3 m) and a deck 36 ft wide.

Who owns US 421 over I-90 Eb/Wb?

It is owned by the State Toll Authority.