US Bridges

I-74 over Wildcat Brook

Fair

Marion County, Indiana · 05.90 E I-465 · Structure no. 044650

Built
1950
75 years old, rebuilt 1958
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
34,861
2004 count
Owner
State
State Highway Agency

About this bridge

I-74 over Wildcat Brook is a concrete culvert carrying I-74 over Wildcat Brook in Marion County, Indiana. It was built in 1950 and reconstructed in 1958, so it is 75 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 34,861 vehicles a day, roughly 5% of them trucks, projected to reach 70,000 by 2030. The structure is 35 ft (10.6 m) long and 134 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-74
CrossesWildcat Brook
Location05.90 E I-465
RouteInterstate 74
CountyMarion County
StateIndiana
Coordinates39.67775, -85.96543
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.6 m)
Longest span35 ft (10.6 m)
Deck width134 ft (40.7 m)
Roadway width75 ft (23 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,861 (2004)
Projected traffic70,000 by 2030
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-74 over Wildcat Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1958.

What condition is I-74 over Wildcat Brook 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-74 over Wildcat Brook carry?

About 34,861 vehicles per day (2004 count), of which roughly 5% are trucks.

How long is I-74 over Wildcat Brook?

The structure is 35 ft (10.6 m) long with a longest span of 35 ft (10.6 m) and a deck 134 ft wide.

Who owns I-74 over Wildcat Brook?

It is owned by the State Highway Agency.