US Bridges

KY-877 over Unname Stream

Fair

Carlisle County, Kentucky · .10 MI West of JCT US 51 · Structure no. 020B00044N

Built
1957
68 years old
Condition
Fair
inspected January 2023
Type
Tee Beam
Concrete
Length
114 ft
3 main spans
Daily traffic
302
2022 count
Owner
State
State Highway Agency

About this bridge

KY-877 over Unname Stream is a concrete tee beam carrying KY-877 over Unname Stream in Carlisle County, Kentucky. It was built in 1957, so it is 68 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 302 vehicles a day, projected to reach 302 by 2042. The structure is 114 ft (34.7 m) long and 28 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesKY-877
CrossesUnname Stream
Location.10 MI West of JCT US 51
RouteState Highway 877
CountyCarlisle County
StateKentucky
Coordinates36.79556, -89.01556
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.7 US tons
Inventory rating47.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length114 ft (34.7 m)
Longest span38 ft (11.6 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic302 (2022)
Projected traffic302 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 1957, making it 68 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 January 2023.

How much traffic does KY-877 over Unname Stream carry?

About 302 vehicles per day (2022 count).

How long is KY-877 over Unname Stream?

The structure is 114 ft (34.7 m) long with a longest span of 38 ft (11.6 m) and a deck 28 ft wide.

Who owns KY-877 over Unname Stream?

It is owned by the State Highway Agency.