US Bridges

I-465 SB to I-74 E over I-465 US 421X Ramp

Fair

Marion County, Indiana · 00.04 S I-74 · Structure no. 049806

Built
2001
24 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,687 ft
11 main spans
Daily traffic
11,852
2004 count
Owner
State
State Highway Agency

About this bridge

I-465 SB to I-74 E over I-465 US 421X Ramp is a steel continuous stringer/multi-beam or girder carrying I-465 SB to I-74 E over I-465 US 421X Ramp in Marion County, Indiana. It was built in 2001, so it is 24 years old, younger 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 11,852 vehicles a day, roughly 11% of them trucks, projected to reach 16,700 by 2032. The structure is 1,687 ft (514.1 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-465 SB to I-74 E
CrossesI-465 US 421X Ramp
Location00.04 S I-74
RouteInterstate 74
CountyMarion County
StateIndiana
Coordinates39.73116, -86.04674
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length1,687 ft (514.1 m)
Longest span198 ft (60.4 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

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-465 SB to I-74 E over I-465 US 421X Ramp built?

It was built in 2001, making it 24 years old in 2025.

What condition is I-465 SB to I-74 E over I-465 US 421X Ramp 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-465 SB to I-74 E over I-465 US 421X Ramp carry?

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

How long is I-465 SB to I-74 E over I-465 US 421X Ramp?

The structure is 1,687 ft (514.1 m) long with a longest span of 198 ft (60.4 m) and a deck 39 ft wide.

Who owns I-465 SB to I-74 E over I-465 US 421X Ramp?

It is owned by the State Highway Agency.