US Bridges

I-90 Rampus 421 over I-90 Eb/Wb

Fair

LaPorte County, Indiana · 00.18 W US 421 · Structure no. 047140

Built
1956
69 years old, rebuilt 1986
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
244 ft
5 main spans
Daily traffic
1,260
2014 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 Rampus 421 over I-90 Eb/Wb is a steel stringer/multi-beam or girder carrying I-90 Rampus 421 over I-90 Eb/Wb in LaPorte County, Indiana. It was built in 1956 and reconstructed in 1986, 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 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 1,260 vehicles a day, roughly 10% of them trucks, projected to reach 7,676 by 2031. The structure is 244 ft (74.3 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesI-90 Rampus 421
CrossesI-90 Eb/Wb
Location00.18 W US 421
RouteInterstate 90
CountyLaPorte County
StateIndiana
Coordinates41.59006, -86.90047
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.1 US tons
Inventory rating49.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length244 ft (74.3 m)
Longest span71 ft (21.6 m)
Deck width39 ft (11.8 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,260 (2014)
Projected traffic7,676 by 2031
Trucks10%
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 Rampus 421 over I-90 Eb/Wb built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1986.

What condition is I-90 Rampus 421 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 Rampus 421 over I-90 Eb/Wb carry?

About 1,260 vehicles per day (2014 count), of which roughly 10% are trucks.

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

The structure is 244 ft (74.3 m) long with a longest span of 71 ft (21.6 m) and a deck 39 ft wide.

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

It is owned by the State Toll Authority.