US Bridges

KY-878 over Mistaken Creek

FairPosted for load

Grayson County, Kentucky · 2.0 MI West of JCT Ky 54 · Structure no. 043B00071N

Built
1956
69 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
98 ft
3 main spans
Daily traffic
122
2022 count
Owner
State
State Highway Agency

About this bridge

KY-878 over Mistaken Creek is a concrete tee beam carrying KY-878 over Mistaken Creek in Grayson 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 122 vehicles a day, projected to reach 122 by 2042. The structure is 98 ft (29.9 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKY-878
CrossesMistaken Creek
Location2.0 MI West of JCT Ky 54
RouteState Highway 878
CountyGrayson County
StateKentucky
Coordinates37.53528, -86.61611
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating35.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length98 ft (29.9 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2022)
Projected traffic122 by 2042
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-878 over Mistaken Creek built?

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

What condition is KY-878 over Mistaken Creek 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 September 2023.

How much traffic does KY-878 over Mistaken Creek carry?

About 122 vehicles per day (2022 count).

How long is KY-878 over Mistaken Creek?

The structure is 98 ft (29.9 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns KY-878 over Mistaken Creek?

It is owned by the State Highway Agency.