US Bridges

I-74 WB to I-465 S over I-465 US 421X

Good

Marion County, Indiana · 00.03 N I-74 · Structure no. 049808

Built
2002
23 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,155 ft
9 main spans
Daily traffic
11,852
2004 count
Owner
State
State Highway Agency

About this bridge

I-74 WB to I-465 S over I-465 US 421X is a steel continuous stringer/multi-beam or girder carrying I-74 WB to I-465 S over I-465 US 421X in Marion County, Indiana. It was built in 2002, so it is 23 years old, younger 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 11,852 vehicles a day, roughly 11% of them trucks, projected to reach 16,700 by 2032. The structure is 1,155 ft (352 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-74 WB to I-465 S
CrossesI-465 US 421X
Location00.03 N I-74
RouteInterstate 465
CountyMarion County
StateIndiana
Coordinates39.73325, -86.04494
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
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length1,155 ft (352 m)
Longest span172 ft (52.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic11,852 (2004)
Projected traffic16,700 by 2032
Trucks11%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-74 WB to I-465 S over I-465 US 421X built?

It was built in 2002, making it 23 years old in 2025.

What condition is I-74 WB to I-465 S over I-465 US 421X 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 I-74 WB to I-465 S over I-465 US 421X carry?

About 11,852 vehicles per day (2004 count), of which roughly 11% are trucks.

How long is I-74 WB to I-465 S over I-465 US 421X?

The structure is 1,155 ft (352 m) long with a longest span of 172 ft (52.3 m) and a deck 39 ft wide.

Who owns I-74 WB to I-465 S over I-465 US 421X?

It is owned by the State Highway Agency.