US Bridges

I-74 WB over US 231 Sb/Nb

Fair

Montgomery County, Indiana · 02.45 W SR 47 · Structure no. 044080

Built
1964
61 years old, rebuilt 2018
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
157 ft
4 main spans
Daily traffic
8,526
2017 count
Owner
State
State Highway Agency

About this bridge

I-74 WB over US 231 Sb/Nb is a concrete continuous slab carrying I-74 WB over US 231 Sb/Nb in Montgomery 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 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 8,526 vehicles a day, roughly 39% of them trucks, projected to reach 10,726 by 2037. The structure is 157 ft (47.8 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-74 WB
CrossesUS 231 Sb/Nb
Location02.45 W SR 47
RouteInterstate 74
CountyMontgomery County
StateIndiana
Coordinates40.07973, -86.90422
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length157 ft (47.8 m)
Longest span43 ft (13.1 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,526 (2017)
Projected traffic10,726 by 2037
Trucks39%
Lanes on structure3
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-74 WB over US 231 Sb/Nb built?

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

What condition is I-74 WB over US 231 Sb/Nb 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 September 2024.

How much traffic does I-74 WB over US 231 Sb/Nb carry?

About 8,526 vehicles per day (2017 count), of which roughly 39% are trucks.

How long is I-74 WB over US 231 Sb/Nb?

The structure is 157 ft (47.8 m) long with a longest span of 43 ft (13.1 m) and a deck 55 ft wide.

Who owns I-74 WB over US 231 Sb/Nb?

It is owned by the State Highway Agency.