US Bridges

I-65 over 16th Street

Fair

Marion County, Indiana · 03.69 N I-70 · Structure no. 036700

Built
1969
56 years old, rebuilt 2018
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
118,986
2018 count
Owner
State
State Highway Agency

About this bridge

I-65 over 16th Street is a prestressed concrete continuous stringer/multi-beam or girder carrying I-65 over 16th Street in Marion County, Indiana. It was built in 1969 and reconstructed in 2018, so it is 56 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 118,986 vehicles a day, roughly 9% of them trucks, projected to reach 150,944 by 2038. The structure is 161 ft (49.1 m) long and 124 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-65
Crosses16th Street
Location03.69 N I-70
RouteInterstate 65
CountyMarion County
StateIndiana
Coordinates39.78835, -86.16651
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.1 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span86 ft (26.2 m)
Deck width124 ft (37.9 m)
Roadway width119 ft (36.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118,986 (2018)
Projected traffic150,944 by 2038
Trucks9%
Lanes on structure8
Traffic directionTwo-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-65 over 16th Street built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2018.

What condition is I-65 over 16th 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 October 2023.

How much traffic does I-65 over 16th Street carry?

About 118,986 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is I-65 over 16th Street?

The structure is 161 ft (49.1 m) long with a longest span of 86 ft (26.2 m) and a deck 124 ft wide.

Who owns I-65 over 16th Street?

It is owned by the State Highway Agency.