US Bridges

Zion Mountain RD over Crooked Creek

Good

Estill County, Kentucky · 0.3 MI S Ky 1139 · Structure no. 033C00025N

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
13
2012 count
Owner
County
County Highway Agency

About this bridge

Zion Mountain RD over Crooked Creek is a prestressed concrete box beam or girders - multiple carrying Zion Mountain RD over Crooked Creek in Estill County, Kentucky. It was built in 1991, so it is 34 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 13 vehicles a day, projected to reach 13 by 2032. The structure is 32 ft (9.8 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesZion Mountain RD
CrossesCrooked Creek
Location0.3 MI S Ky 1139
RouteCounty Highway 1230
Coordinates37.64278, -84.05889
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.8 m)
Longest span29 ft (8.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (2012)
Projected traffic13 by 2032
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Zion Mountain RD over Crooked Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Zion Mountain RD over Crooked 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 Zion Mountain RD over Crooked Creek carry?

About 13 vehicles per day (2012 count).

How long is Zion Mountain RD over Crooked Creek?

The structure is 32 ft (9.8 m) long with a longest span of 29 ft (8.8 m) and a deck 16 ft wide.

Who owns Zion Mountain RD over Crooked Creek?

It is owned by the County Highway Agency.