US Bridges

KY-877 over Unname Stream

Fair

Carlisle County, Kentucky · 2.7 MI West of JCT US 51 · Structure no. 020B00042N

Built
1956
69 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
39 ft
2 main spans
Daily traffic
83
2021 count
Owner
State
State Highway Agency

About this bridge

KY-877 over Unname Stream is a concrete culvert carrying KY-877 over Unname Stream in Carlisle County, Kentucky. It was built in 1956, so it is 69 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 83 vehicles a day, projected to reach 83 by 2041. The structure is 39 ft (11.9 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKY-877
CrossesUnname Stream
Location2.7 MI West of JCT US 51
RouteState Highway 877
CountyCarlisle County
StateKentucky
Coordinates36.80694, -89.05417
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length39 ft (11.9 m)
Longest span16 ft (4.9 m)
Deck width34 ft (10.3 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83 (2021)
Projected traffic83 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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-877 over Unname Stream built?

It was built in 1956, making it 69 years old in 2025.

What condition is KY-877 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-877 over Unname Stream carry?

About 83 vehicles per day (2021 count).

How long is KY-877 over Unname Stream?

The structure is 39 ft (11.9 m) long with a longest span of 16 ft (4.9 m) and a deck 34 ft wide.

Who owns KY-877 over Unname Stream?

It is owned by the State Highway Agency.