US Bridges

SR122 over Rocky Run

Fair

Preble County, Ohio · 1.3 MI E of Eaton · Structure no. 6802044

Built
1957
68 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
86 ft
3 main spans
Daily traffic
4,864
2015 count
Owner
State
State Highway Agency

About this bridge

SR122 over Rocky Run is a concrete continuous slab carrying SR122 over Rocky Run in Preble County, Ohio. It was built in 1957, so it is 68 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 4,864 vehicles a day, roughly 11% of them trucks, projected to reach 6,751 by 2035. The structure is 86 ft (26.2 m) long and 40 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR122
CrossesRocky Run
Location1.3 MI E of Eaton
RouteState Highway 122
CountyPreble County
StateOhio
Coordinates39.72347, -84.61406
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length86 ft (26.2 m)
Longest span32 ft (9.8 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,864 (2015)
Projected traffic6,751 by 2035
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR122 over Rocky Run built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR122 over Rocky 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 March 2024.

How much traffic does SR122 over Rocky Run carry?

About 4,864 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is SR122 over Rocky Run?

The structure is 86 ft (26.2 m) long with a longest span of 32 ft (9.8 m) and a deck 40 ft wide.

Who owns SR122 over Rocky Run?

It is owned by the State Highway Agency.