US Bridges

Ky 1531 over Back Run

Fair

Jefferson County, Kentucky · 1.25 MI S of Ky 1819 · Structure no. 056B00081N

Built
1955
70 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
2,298
2023 count
Owner
State
State Highway Agency

About this bridge

Ky 1531 over Back Run is a concrete culvert carrying Ky 1531 over Back Run in Jefferson County, Kentucky. It was built in 1955, so it is 70 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 2,298 vehicles a day, projected to reach 2,298 by 2043. The structure is 25 ft (7.6 m) long and 54 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesKy 1531
CrossesBack Run
Location1.25 MI S of Ky 1819
RouteState Highway 1531
CountyJefferson County
StateKentucky
Coordinates38.11083, -85.47583
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width54 ft (16.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,298 (2023)
Projected traffic2,298 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ky 1531 over Back Run built?

It was built in 1955, making it 70 years old in 2025.

What condition is Ky 1531 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 October 2023.

How much traffic does Ky 1531 over Back Run carry?

About 2,298 vehicles per day (2023 count).

How long is Ky 1531 over Back Run?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 54 ft wide.

Who owns Ky 1531 over Back Run?

It is owned by the State Highway Agency.