US Bridges

County Road 21H over Blanchard River

Fair

Putnam County, Ohio · 0.15 MI SW of RD I-18 · Structure no. 6933327

Built
1983
42 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
268 ft
4 main spans
Daily traffic
370
1991 count
Owner
County
County Highway Agency

About this bridge

County Road 21H over Blanchard River is a prestressed concrete box beam or girders - multiple carrying County Road 21H over Blanchard River in Putnam County, Ohio. It was built in 1983, so it is 42 years old, younger 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 370 vehicles a day, roughly 5% of them trucks, projected to reach 514 by 2011. The structure is 268 ft (81.7 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 21H
CrossesBlanchard River
Location0.15 MI SW of RD I-18
RouteCounty Highway 21H
CountyPutnam County
StateOhio
Coordinates41.05362, -84.27049
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span73 ft (22.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (1991)
Projected traffic514 by 2011
Trucks5%
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 County Road 21H over Blanchard River built?

It was built in 1983, making it 42 years old in 2025.

What condition is County Road 21H 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 November 2024.

How much traffic does County Road 21H over Blanchard River carry?

About 370 vehicles per day (1991 count), of which roughly 5% are trucks.

How long is County Road 21H over Blanchard River?

The structure is 268 ft (81.7 m) long with a longest span of 73 ft (22.3 m) and a deck 24 ft wide.

Who owns County Road 21H over Blanchard River?

It is owned by the County Highway Agency.