US Bridges

Dogtown 31 over Dogtown / Slate Run

Good

Huron County, Ohio · 0.6 MI W of Thomas RD · Structure no. 3935442

Built
1997
28 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
324
2015 count
Owner
County
County Highway Agency

About this bridge

Dogtown 31 over Dogtown / Slate Run is a prestressed concrete box beam or girders - multiple carrying Dogtown 31 over Dogtown / Slate Run in Huron County, Ohio. It was built in 1997, so it is 28 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 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 324 vehicles a day, roughly 7% of them trucks, projected to reach 450 by 2035. The structure is 67 ft (20.4 m) long and 25 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesDogtown 31
CrossesDogtown / Slate Run
Location0.6 MI W of Thomas RD
RouteCounty Highway T0031
CountyHuron County
StateOhio
Coordinates41.15722, -82.76623
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating53.6 US tons
Inventory rating42.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length67 ft (20.4 m)
Longest span65 ft (19.8 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic324 (2015)
Projected traffic450 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Dogtown 31 over Dogtown / Slate Run built?

It was built in 1997, making it 28 years old in 2025.

What condition is Dogtown 31 over Dogtown / Slate 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 2024.

How much traffic does Dogtown 31 over Dogtown / Slate Run carry?

About 324 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Dogtown 31 over Dogtown / Slate Run?

The structure is 67 ft (20.4 m) long with a longest span of 65 ft (19.8 m) and a deck 25 ft wide.

Who owns Dogtown 31 over Dogtown / Slate Run?

It is owned by the County Highway Agency.