US Bridges

CO RD 550 over Old Town Run

Fair

Ross County, Ohio · .20 Mi. E of Westfall RD · Structure no. 7153236

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
3,075
2015 count
Owner
County
County Highway Agency

About this bridge

CO RD 550 over Old Town Run is a prestressed concrete box beam or girders - multiple carrying CO RD 550 over Old Town Run in Ross County, Ohio. It was built in 1978, so it is 47 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 3,075 vehicles a day, roughly 6% of them trucks, projected to reach 4,268 by 2035. The structure is 51 ft (15.5 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCO RD 550
CrossesOld Town Run
Location.20 Mi. E of Westfall RD
RouteCounty Highway C0550
CountyRoss County
StateOhio
Coordinates39.40007, -83.16821
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating67.9 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length51 ft (15.5 m)
Longest span47 ft (14.3 m)
Deck width25 ft (7.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,075 (2015)
Projected traffic4,268 by 2035
Trucks6%
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 CO RD 550 over Old Town Run built?

It was built in 1978, making it 47 years old in 2025.

What condition is CO RD 550 over Old Town 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 December 2024.

How much traffic does CO RD 550 over Old Town Run carry?

About 3,075 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is CO RD 550 over Old Town Run?

The structure is 51 ft (15.5 m) long with a longest span of 47 ft (14.3 m) and a deck 25 ft wide.

Who owns CO RD 550 over Old Town Run?

It is owned by the County Highway Agency.