US Bridges

NB I-270 over Big Walnut Creek

Fair

Franklin County, Ohio · 2.59 MI N of SR16 · Structure no. 2511800

Built
1973
52 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
293 ft
4 main spans
Daily traffic
74,396
2015 count
Owner
State
State Highway Agency

About this bridge

NB I-270 over Big Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying NB I-270 over Big Walnut Creek 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 74,396 vehicles a day, roughly 13% of them trucks, projected to reach 103,262 by 2035. The structure is 293 ft (89.2 m) long and 77 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB I-270
CrossesBig Walnut Creek
Location2.59 MI N of SR16
RouteInterstate 270
CountyFranklin County
StateOhio
Coordinates40.00694, -82.87511
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.3 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length293 ft (89.2 m)
Longest span71 ft (21.6 m)
Deck width77 ft (23.6 m)
Roadway width74 ft (22.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,396 (2015)
Projected traffic103,262 by 2035
Trucks13%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was NB I-270 over Big Walnut Creek built?

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

What condition is NB I-270 over Big Walnut Creek 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 November 2024.

How much traffic does NB I-270 over Big Walnut Creek carry?

About 74,396 vehicles per day (2015 count), of which roughly 13% are trucks.

How long is NB I-270 over Big Walnut Creek?

The structure is 293 ft (89.2 m) long with a longest span of 71 ft (21.6 m) and a deck 77 ft wide.

Who owns NB I-270 over Big Walnut Creek?

It is owned by the State Highway Agency.