US Bridges

KY-877 over Unname Stream

Good

Carlisle County, Kentucky · .60 MI West of JCT US 51 · Structure no. 020B00043N

Built
1957
68 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
302
2022 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 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 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 302 vehicles a day, projected to reach 302 by 2042. The structure is 27 ft (8.2 m) long and 29 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.60 MI West of JCT US 51
RouteState Highway 877
CountyCarlisle County
StateKentucky
Coordinates36.80139, -89.02722
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 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 length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.7 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 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 March 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 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns KY-877 over Unname Stream?

It is owned by the State Highway Agency.