US Bridges

Henry Ison Hollow over Cowan Creek

Good

Letcher County, Kentucky · 0.1 M N of JCT Ky 931 · Structure no. 067C00099N

Built
2021
4 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
111
2019 count
Owner
County
County Highway Agency

About this bridge

Henry Ison Hollow over Cowan Creek is a prestressed concrete box beam or girders - multiple carrying Henry Ison Hollow over Cowan Creek in Letcher County, Kentucky. It was built in 2021, so it is 4 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 111 vehicles a day, projected to reach 111 by 2039. The structure is 31 ft (9.6 m) long and 12 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesHenry Ison Hollow
CrossesCowan Creek
Location0.1 M N of JCT Ky 931
RouteCounty Highway 1231
CountyLetcher County
StateKentucky
Coordinates37.06472, -82.86333
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.1 US tons
Inventory rating54.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length31 ft (9.6 m)
Longest span30 ft (9.1 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (2019)
Projected traffic111 by 2039
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Henry Ison Hollow over Cowan Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Henry Ison Hollow over Cowan 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 May 2024.

How much traffic does Henry Ison Hollow over Cowan Creek carry?

About 111 vehicles per day (2019 count).

How long is Henry Ison Hollow over Cowan Creek?

The structure is 31 ft (9.6 m) long with a longest span of 30 ft (9.1 m) and a deck 12 ft wide.

Who owns Henry Ison Hollow over Cowan Creek?

It is owned by the County Highway Agency.