US Bridges

County Road 171 over Flat Rock Creek

Good

Paulding County, Ohio · Flat Rock & Aug River JCT · Structure no. 6330142

Built
2007
18 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
122 ft
2 main spans
Daily traffic
432
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 171 over Flat Rock Creek is a prestressed concrete continuous box beam or girders - multiple carrying County Road 171 over Flat Rock Creek in Paulding County, Ohio. It was built in 2007, so it is 18 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 432 vehicles a day, roughly 7% of them trucks, projected to reach 600 by 2035. The structure is 122 ft (37.2 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty Road 171
CrossesFlat Rock Creek
LocationFlat Rock & Aug River JCT
RouteCounty Highway C0171
StateOhio
Coordinates41.17645, -84.44034
Functional classRural Minor Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating27.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span59 ft (18 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic432 (2015)
Projected traffic600 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 County Road 171 over Flat Rock Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is County Road 171 over Flat Rock Creek 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 November 2023.

How much traffic does County Road 171 over Flat Rock Creek carry?

About 432 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is County Road 171 over Flat Rock Creek?

The structure is 122 ft (37.2 m) long with a longest span of 59 ft (18 m) and a deck 28 ft wide.

Who owns County Road 171 over Flat Rock Creek?

It is owned by the County Highway Agency.