US Bridges

Baum Hill RD over Black Run

Fair

Ross County, Ohio · 2.62 MI W of Camelin Hill · Structure no. 7140347

Built
1907
118 years old, rebuilt 1999
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
231
2015 count
Owner
County
County Highway Agency

About this bridge

Baum Hill RD over Black Run is a prestressed concrete box beam or girders - multiple carrying Baum Hill RD over Black Run in Ross County, Ohio. It was built in 1907 and reconstructed in 1999, so it is 118 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 5 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 231 vehicles a day, roughly 7% of them trucks, projected to reach 321 by 2035. The structure is 34 ft (10.4 m) long and 22 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesBaum Hill RD
CrossesBlack Run
Location2.62 MI W of Camelin Hill
RouteCounty Highway 156
CountyRoss County
StateOhio
Coordinates39.25616, -83.11958
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85.8 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2015)
Projected traffic321 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Baum Hill RD over Black Run built?

It was built in 1907, making it 118 years old in 2025. It was reconstructed in 1999.

What condition is Baum Hill RD over Black Run 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 May 2024.

How much traffic does Baum Hill RD over Black Run carry?

About 231 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Baum Hill RD over Black Run?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 22 ft wide.

Who owns Baum Hill RD over Black Run?

It is owned by the County Highway Agency.