US Bridges

I-70 EB over Harper RD

Fair

Franklin County, Ohio · 0.24 MI E. of I-670 · Structure no. 2504529

Built
1973
52 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
28,811
2015 count
Owner
State
State Highway Agency

About this bridge

I-70 EB over Harper RD is a steel continuous stringer/multi-beam or girder carrying I-70 EB over Harper RD in Franklin County, Ohio. It was built in 1973, so it is 52 years old, older than the Ohio average of 47.3 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 28,811 vehicles a day, roughly 15% of them trucks, projected to reach 39,990 by 2035. The structure is 158 ft (48.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-70 EB
CrossesHarper RD
Location0.24 MI E. of I-670
RouteInterstate 70
CountyFranklin County
StateOhio
Coordinates39.96648, -83.06
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length158 ft (48.3 m)
Longest span58 ft (17.8 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,811 (2015)
Projected traffic39,990 by 2035
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 EB over Harper RD built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-70 EB over Harper RD 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 August 2024.

How much traffic does I-70 EB over Harper RD carry?

About 28,811 vehicles per day (2015 count), of which roughly 15% are trucks.

How long is I-70 EB over Harper RD?

The structure is 158 ft (48.3 m) long with a longest span of 58 ft (17.8 m) and a deck 44 ft wide.

Who owns I-70 EB over Harper RD?

It is owned by the State Highway Agency.