US Bridges

SR 772 over Ralston Run

Fair

Ross County, Ohio · 6.04 MI S of JCT US 50 · Structure no. 7105495

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
136 ft
3 main spans
Daily traffic
2,704
2015 count
Owner
State
State Highway Agency

About this bridge

SR 772 over Ralston Run is a steel continuous stringer/multi-beam or girder carrying SR 772 over Ralston Run in Ross County, Ohio. It was built in 1970, so it is 55 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 2,704 vehicles a day, roughly 4% of them trucks, projected to reach 3,753 by 2035. The structure is 136 ft (41.5 m) long and 38 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 772
CrossesRalston Run
Location6.04 MI S of JCT US 50
RouteState Highway 772
CountyRoss County
StateOhio
Coordinates39.29013, -83.05401
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating55 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,704 (2015)
Projected traffic3,753 by 2035
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 SR 772 over Ralston Run built?

It was built in 1970, making it 55 years old in 2025.

What condition is SR 772 over Ralston 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 October 2024.

How much traffic does SR 772 over Ralston Run carry?

About 2,704 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is SR 772 over Ralston Run?

The structure is 136 ft (41.5 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns SR 772 over Ralston Run?

It is owned by the State Highway Agency.