US Bridges

ST Clair Avenue over I-670

Good

Franklin County, Ohio · 0.24 Mi. E. of IR71 · Structure no. 2517566

Built
1992
33 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
534 ft
4 main spans
Daily traffic
3,479
2015 count
Owner
State
State Highway Agency

About this bridge

ST Clair Avenue over I-670 is a steel continuous stringer/multi-beam or girder carrying ST Clair Avenue over I-670 in Franklin County, Ohio. It was built in 1992, so it is 33 years old, younger than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,479 vehicles a day, roughly 5% of them trucks, projected to reach 67,143 by 2035. The structure is 534 ft (162.9 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesST Clair Avenue
CrossesI-670
Location0.24 Mi. E. of IR71
RouteCity Street 1923
CountyFranklin County
StateOhio
Coordinates39.97844, -82.98033
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length534 ft (162.9 m)
Longest span154 ft (46.9 m)
Deck width40 ft (12.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,479 (2015)
Projected traffic67,143 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 ST Clair Avenue over I-670 built?

It was built in 1992, making it 33 years old in 2025.

What condition is ST Clair Avenue over I-670 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does ST Clair Avenue over I-670 carry?

About 3,479 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is ST Clair Avenue over I-670?

The structure is 534 ft (162.9 m) long with a longest span of 154 ft (46.9 m) and a deck 40 ft wide.

Who owns ST Clair Avenue over I-670?

It is owned by the State Highway Agency.