US Bridges

I-465 NB over East 21st Street

Fair

Marion County, Indiana · 00.18 S I-70 · Structure no. 049980

Built
1966
59 years old, rebuilt 2002
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
2 main spans
Daily traffic
60,349
2021 count
Owner
State
State Highway Agency

About this bridge

I-465 NB over East 21st Street is a steel continuous stringer/multi-beam or girder carrying I-465 NB over East 21st Street in Marion County, Indiana. It was built in 1966 and reconstructed in 2002, so it is 59 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 60,349 vehicles a day, roughly 9% of them trucks, projected to reach 70,000 by 2035. The structure is 155 ft (47.3 m) long and 64 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-465 NB
CrossesEast 21st Street
Location00.18 S I-70
RouteInterstate 465
StateIndiana
Coordinates39.79646, -86.03515
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating20 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length155 ft (47.3 m)
Longest span77 ft (23.4 m)
Deck width64 ft (19.4 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,349 (2021)
Projected traffic70,000 by 2035
Trucks9%
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-465 NB over East 21st Street built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2002.

What condition is I-465 NB over East 21st Street 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 May 2024.

How much traffic does I-465 NB over East 21st Street carry?

About 60,349 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I-465 NB over East 21st Street?

The structure is 155 ft (47.3 m) long with a longest span of 77 ft (23.4 m) and a deck 64 ft wide.

Who owns I-465 NB over East 21st Street?

It is owned by the State Highway Agency.