US Bridges

Blair Branch over Rockhouse Creek

Good

Letcher County, Kentucky · At JCT of Ky 7 · Structure no. 067C00123N

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
667
2019 count
Owner
County
County Highway Agency

About this bridge

Blair Branch over Rockhouse Creek is a prestressed concrete box beam or girders - multiple carrying Blair Branch over Rockhouse Creek in Letcher County, Kentucky. It was built in 2024, so it is 1 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 667 vehicles a day, projected to reach 667 by 2039. The structure is 92 ft (27.9 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBlair Branch
CrossesRockhouse Creek
LocationAt JCT of Ky 7
RouteCounty Highway 1339
CountyLetcher County
StateKentucky
Coordinates37.17278, -82.91972
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.6 US tons
Inventory rating68.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length92 ft (27.9 m)
Longest span90 ft (27.4 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic667 (2019)
Projected traffic667 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Blair Branch over Rockhouse Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is Blair Branch over Rockhouse Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Blair Branch over Rockhouse Creek carry?

About 667 vehicles per day (2019 count).

How long is Blair Branch over Rockhouse Creek?

The structure is 92 ft (27.9 m) long with a longest span of 90 ft (27.4 m) and a deck 20 ft wide.

Who owns Blair Branch over Rockhouse Creek?

It is owned by the County Highway Agency.