US Bridges

SR309 over Railroad

Good

Marion County, Ohio · 1 Mile East of US23 · Structure no. 5101737

Built
2023
2 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
10,390
2019 count
Owner
State
State Highway Agency

About this bridge

SR309 over Railroad is a steel stringer/multi-beam or girder carrying SR309 over Railroad in Marion County, Ohio. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,390 vehicles a day, roughly 11% of them trucks, projected to reach 15,000 by 2040. The structure is 83 ft (25.3 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR309
CrossesRailroad
Location1 Mile East of US23
RouteState Highway 309
CountyMarion County
StateOhio
Coordinates40.60204, -83.07035
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span83 ft (25.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,390 (2019)
Projected traffic15,000 by 2040
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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 SR309 over Railroad built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR309 over Railroad 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 June 2024.

How much traffic does SR309 over Railroad carry?

About 10,390 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is SR309 over Railroad?

The structure is 83 ft (25.3 m) long with a longest span of 83 ft (25.3 m) and a deck 43 ft wide.

Who owns SR309 over Railroad?

It is owned by the State Highway Agency.