US Bridges

I-70 over Harding Street CSX RR

Fair

Marion County, Indiana · 02.36 W I-65 · Structure no. 042170

Built
1975
50 years old, rebuilt 2016
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
474 ft
3 main spans
Daily traffic
98,119
2021 count
Owner
State
State Highway Agency

About this bridge

I-70 over Harding Street CSX RR is a steel continuous stringer/multi-beam or girder carrying I-70 over Harding Street CSX RR in Marion County, Indiana. It was built in 1975 and reconstructed in 2016, so it is 50 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 5 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 98,119 vehicles a day, roughly 16% of them trucks, projected to reach 324,995 by 2030. The structure is 474 ft (144.6 m) long and 125 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-70
CrossesHarding Street CSX RR
Location02.36 W I-65
RouteInterstate 70
CountyMarion County
StateIndiana
Coordinates39.75545, -86.18735
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 rating39.2 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length474 ft (144.6 m)
Longest span139 ft (42.5 m)
Deck width125 ft (38 m)
Roadway width119 ft (36.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,119 (2021)
Projected traffic324,995 by 2030
Trucks16%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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-70 over Harding Street CSX RR built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2016.

What condition is I-70 over Harding Street CSX RR 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 February 2024.

How much traffic does I-70 over Harding Street CSX RR carry?

About 98,119 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I-70 over Harding Street CSX RR?

The structure is 474 ft (144.6 m) long with a longest span of 139 ft (42.5 m) and a deck 125 ft wide.

Who owns I-70 over Harding Street CSX RR?

It is owned by the State Highway Agency.