US Bridges

Dry Ridge RD over Back Run

Fair

Jefferson County, Kentucky · 0.5 MI S of Ky 1531 · Structure no. 056C00044N

Built
1974
51 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
502
2014 count
Owner
County
County Highway Agency

About this bridge

Dry Ridge RD over Back Run is a concrete culvert carrying Dry Ridge RD over Back Run in Jefferson County, Kentucky. It was built in 1974, so it is 51 years old, older than the Kentucky average of 46.6 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 502 vehicles a day, projected to reach 927 by 2034. The structure is 21 ft (6.4 m) long and 72 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDry Ridge RD
CrossesBack Run
Location0.5 MI S of Ky 1531
RouteCounty Highway 1012
CountyJefferson County
StateKentucky
Coordinates38.11417, -85.46639
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width72 ft (21.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic502 (2014)
Projected traffic927 by 2034
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dry Ridge RD over Back Run built?

It was built in 1974, making it 51 years old in 2025.

What condition is Dry Ridge RD over Back 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 January 2024.

How much traffic does Dry Ridge RD over Back Run carry?

About 502 vehicles per day (2014 count).

How long is Dry Ridge RD over Back Run?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 72 ft wide.

Who owns Dry Ridge RD over Back Run?

It is owned by the County Highway Agency.