US Bridges

I-71 SB over Over TR 109(BIG Walnut)

Good

Delaware County, Ohio · 3.55 MI N of Franklin CO · Structure no. 2102196

Built
1959
66 years old, rebuilt 2001
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
132 ft
3 main spans
Daily traffic
41,597
2015 count
Owner
State
State Highway Agency

About this bridge

I-71 SB over Over TR 109(BIG Walnut) is a steel continuous stringer/multi-beam or girder carrying I-71 SB over Over TR 109(BIG Walnut) in Delaware County, Ohio. It was built in 1959 and reconstructed in 2001, so it is 66 years old, older 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 41,597 vehicles a day, roughly 17% of them trucks, projected to reach 57,737 by 2035. The structure is 132 ft (40.2 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-71 SB
CrossesOver TR 109(BIG Walnut)
Location3.55 MI N of Franklin CO
RouteInterstate 71
StateOhio
Coordinates40.18178, -82.94964
Functional classUrban Principal Arterial - Interstate

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.9 US tons
Inventory rating63.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length132 ft (40.2 m)
Longest span58 ft (17.7 m)
Deck width67 ft (20.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,597 (2015)
Projected traffic57,737 by 2035
Trucks17%
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-71 SB over Over TR 109(BIG Walnut) built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2001.

What condition is I-71 SB over Over TR 109(BIG Walnut) 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 September 2024.

How much traffic does I-71 SB over Over TR 109(BIG Walnut) carry?

About 41,597 vehicles per day (2015 count), of which roughly 17% are trucks.

How long is I-71 SB over Over TR 109(BIG Walnut)?

The structure is 132 ft (40.2 m) long with a longest span of 58 ft (17.7 m) and a deck 67 ft wide.

Who owns I-71 SB over Over TR 109(BIG Walnut)?

It is owned by the State Highway Agency.