US Bridges

SR 309 over Little Scioto River

Fair

Marion County, Ohio · 1.78 MI E of SR203 · Structure no. 5101697

Built
1983
42 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
126 ft
3 main spans
Daily traffic
3,565
2015 count
Owner
State
State Highway Agency

About this bridge

SR 309 over Little Scioto River is a concrete continuous slab carrying SR 309 over Little Scioto River in Marion County, Ohio. It was built in 1983, so it is 42 years old, younger 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 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 3,565 vehicles a day, roughly 11% of them trucks, projected to reach 4,948 by 2035. The structure is 126 ft (38.4 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 309
CrossesLittle Scioto River
Location1.78 MI E of SR203
RouteState Highway 309
CountyMarion County
StateOhio
Coordinates40.61142, -83.18366
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length126 ft (38.4 m)
Longest span48 ft (14.5 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,565 (2015)
Projected traffic4,948 by 2035
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 309 over Little Scioto River built?

It was built in 1983, making it 42 years old in 2025.

What condition is SR 309 over Little Scioto River 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 SR 309 over Little Scioto River carry?

About 3,565 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is SR 309 over Little Scioto River?

The structure is 126 ft (38.4 m) long with a longest span of 48 ft (14.5 m) and a deck 36 ft wide.

Who owns SR 309 over Little Scioto River?

It is owned by the State Highway Agency.