US Bridges

County Road 20 over Blanchard River

Fair

Hardin County, Ohio · .3 MI W of JCT of CR 183 · Structure no. 3343510

Built
1963
62 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
165 ft
3 main spans
Daily traffic
162
2015 count
Owner
County
County Highway Agency

About this bridge

County Road 20 over Blanchard River is a prestressed concrete box beam or girders - multiple carrying County Road 20 over Blanchard River in Hardin County, Ohio. It was built in 1963, so it is 62 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 162 vehicles a day, roughly 7% of them trucks, projected to reach 225 by 2035. The structure is 165 ft (50.3 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 20
CrossesBlanchard River
Location.3 MI W of JCT of CR 183
RouteCounty Highway 20
CountyHardin County
StateOhio
Coordinates40.80392, -83.558
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span66 ft (20.1 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2015)
Projected traffic225 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 20 over Blanchard River built?

It was built in 1963, making it 62 years old in 2025.

What condition is County Road 20 over Blanchard River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does County Road 20 over Blanchard River carry?

About 162 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is County Road 20 over Blanchard River?

The structure is 165 ft (50.3 m) long with a longest span of 66 ft (20.1 m) and a deck 28 ft wide.

Who owns County Road 20 over Blanchard River?

It is owned by the County Highway Agency.