US Bridges

I-65 SB over US 231 Nb/Sb Abandoned

Good

Lake County, Indiana · 05.38 S US 30 · Structure no. 038450

Built
1964
61 years old, rebuilt 2018
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
309 ft
5 main spans
Daily traffic
21,860
2015 count
Owner
State
State Highway Agency

About this bridge

I-65 SB over US 231 Nb/Sb Abandoned is a steel continuous stringer/multi-beam or girder carrying I-65 SB over US 231 Nb/Sb Abandoned in Lake County, Indiana. It was built in 1964 and reconstructed in 2018, so it is 61 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 21,860 vehicles a day, roughly 34% of them trucks, projected to reach 22,274 by 2035. The structure is 309 ft (94.3 m) long and 71 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-65 SB
CrossesUS 231 Nb/Sb Abandoned
Location05.38 S US 30
RouteInterstate 65
CountyLake County
StateIndiana
Coordinates41.39367, -87.32416
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length309 ft (94.3 m)
Longest span83 ft (25.2 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,860 (2015)
Projected traffic22,274 by 2035
Trucks34%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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-65 SB over US 231 Nb/Sb Abandoned built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2018.

What condition is I-65 SB over US 231 Nb/Sb Abandoned 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 April 2023.

How much traffic does I-65 SB over US 231 Nb/Sb Abandoned carry?

About 21,860 vehicles per day (2015 count), of which roughly 34% are trucks.

How long is I-65 SB over US 231 Nb/Sb Abandoned?

The structure is 309 ft (94.3 m) long with a longest span of 83 ft (25.2 m) and a deck 71 ft wide.

Who owns I-65 SB over US 231 Nb/Sb Abandoned?

It is owned by the State Highway Agency.