US Bridges

Johnsontown RD over Trib to Mill Creek

FairPosted for load

Jefferson County, Kentucky · 0.6 MI W of US 31W · Structure no. 056C00254N

Built
2008
17 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
10,520
2020 count
Owner
County
County Highway Agency

About this bridge

Johnsontown RD over Trib to Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Johnsontown RD over Trib to Mill Creek in Jefferson County, Kentucky. It was built in 2008, so it is 17 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 10,520 vehicles a day, projected to reach 10,520 by 2040. The structure is 53 ft (16.3 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesJohnsontown RD
CrossesTrib to Mill Creek
Location0.6 MI W of US 31W
RouteCounty Highway 1001
CountyJefferson County
StateKentucky
Coordinates38.12139, -85.86611
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length53 ft (16.3 m)
Longest span49 ft (14.9 m)
Deck width57 ft (17.3 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,520 (2020)
Projected traffic10,520 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Johnsontown RD over Trib to Mill Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Johnsontown RD over Trib to Mill Creek 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 November 2023.

How much traffic does Johnsontown RD over Trib to Mill Creek carry?

About 10,520 vehicles per day (2020 count).

How long is Johnsontown RD over Trib to Mill Creek?

The structure is 53 ft (16.3 m) long with a longest span of 49 ft (14.9 m) and a deck 57 ft wide.

Who owns Johnsontown RD over Trib to Mill Creek?

It is owned by the County Highway Agency.