US Bridges

SR 309 over Dug Run

Good

Allen County, Ohio · 1/8 MI West of Eastown RD · Structure no. 0200956

Built
2000
25 years old
Condition
Good
inspected October 2023
Type
Frame
Concrete
Length
39 ft
2 main spans
Daily traffic
13,245
2015 count
Owner
State
State Highway Agency

About this bridge

SR 309 over Dug Run is a concrete frame carrying SR 309 over Dug Run in Allen County, Ohio. It was built in 2000, so it is 25 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 13,245 vehicles a day, roughly 4% of them trucks, projected to reach 18,384 by 2035. The structure is 39 ft (11.9 m) long and 166 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR 309
CrossesDug Run
Location1/8 MI West of Eastown RD
RouteState Highway 309
CountyAllen County
StateOhio
Coordinates40.77126, -84.16705
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans2
Design loadHS 20 + Mod
Structure length39 ft (11.9 m)
Longest span17 ft (5.2 m)
Deck width166 ft (50.6 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,245 (2015)
Projected traffic18,384 by 2035
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Dug Run built?

It was built in 2000, making it 25 years old in 2025.

What condition is SR 309 over Dug Run 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 SR 309 over Dug Run carry?

About 13,245 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is SR 309 over Dug Run?

The structure is 39 ft (11.9 m) long with a longest span of 17 ft (5.2 m) and a deck 166 ft wide.

Who owns SR 309 over Dug Run?

It is owned by the State Highway Agency.