US Bridges

KY-1377 over Unname Stream

Fair

Carlisle County, Kentucky · .10 MI Nor. of JCT Ky 117 · Structure no. 020B00037N

Built
1955
70 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
863
2021 count
Owner
State
State Highway Agency

About this bridge

KY-1377 over Unname Stream is a concrete culvert carrying KY-1377 over Unname Stream in Carlisle 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 6 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 863 vehicles a day, projected to reach 863 by 2041. The structure is 34 ft (10.4 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesKY-1377
CrossesUnname Stream
Location.10 MI Nor. of JCT Ky 117
RouteState Highway 1377
CountyCarlisle County
StateKentucky
Coordinates36.82889, -88.91778
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic863 (2021)
Projected traffic863 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-1377 over Unname Stream built?

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

What condition is KY-1377 over Unname Stream 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 February 2023.

How much traffic does KY-1377 over Unname Stream carry?

About 863 vehicles per day (2021 count).

How long is KY-1377 over Unname Stream?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.

Who owns KY-1377 over Unname Stream?

It is owned by the State Highway Agency.