US Bridges

CR 304 (12/C) over Stombaugh Ditch #510

Poor

Williams County, Ohio · 02150 RD 12/C · Structure no. 8637628

Built
1935
90 years old
Condition
Poor
inspected November 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
2,648
2015 count
Owner
County
County Highway Agency

About this bridge

CR 304 (12/C) over Stombaugh Ditch #510 is a concrete culvert carrying CR 304 (12/C) over Stombaugh Ditch #510 in Williams County, Ohio. It was built in 1935, so it is 90 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,648 vehicles a day, roughly 8% of them trucks, projected to reach 3,675 by 2035. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 304 (12/C)
CrossesStombaugh Ditch #510
Location02150 RD 12/C
RouteCounty Highway C0304
CountyWilliams County
StateOhio
Coordinates41.44369, -84.59479
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating45 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,648 (2015)
Projected traffic3,675 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 CR 304 (12/C) over Stombaugh Ditch #510 built?

It was built in 1935, making it 90 years old in 2025.

What condition is CR 304 (12/C) over Stombaugh Ditch #510 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does CR 304 (12/C) over Stombaugh Ditch #510 carry?

About 2,648 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is CR 304 (12/C) over Stombaugh Ditch #510?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3.2 m).

Who owns CR 304 (12/C) over Stombaugh Ditch #510?

It is owned by the County Highway Agency.