US Bridges

Rock Rd. over Black Fork Mohican River

Fair

Richland County, Ohio · 0.1 MI N. of Stiving Rd. · Structure no. 7032617

Built
1964
61 years old, rebuilt 1995
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
1,680
2015 count
Owner
County
County Highway Agency

About this bridge

Rock Rd. over Black Fork Mohican River is a steel stringer/multi-beam or girder carrying Rock Rd. over Black Fork Mohican River in Richland County, Ohio. It was built in 1964 and reconstructed in 1995, so it is 61 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 1,680 vehicles a day, roughly 3% of them trucks, projected to reach 2,332 by 2038. The structure is 24 ft (7.3 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRock Rd.
CrossesBlack Fork Mohican River
Location0.1 MI N. of Stiving Rd.
RouteCounty Highway C0150
CountyRichland County
StateOhio
Coordinates40.82683, -82.62913
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating57.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7.1 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,680 (2015)
Projected traffic2,332 by 2038
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$160,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Rd. over Black Fork Mohican River built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1995.

What condition is Rock Rd. over Black Fork Mohican 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 May 2024.

How much traffic does Rock Rd. over Black Fork Mohican River carry?

About 1,680 vehicles per day (2015 count), of which roughly 3% are trucks.

How long is Rock Rd. over Black Fork Mohican River?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7.1 m) and a deck 26 ft wide.

Who owns Rock Rd. over Black Fork Mohican River?

It is owned by the County Highway Agency.