US Bridges

U.S. 68/80 over Tenn.River/Ky Lake

Good

Marshall County, Kentucky · Across Ky Lake · Structure no. 079B00152N

Built
2016
9 years old
Condition
Good
inspected July 2024
Type
Arch - Thru
Steel Continuous
Length
3,611 ft
1 main span
Daily traffic
3,070
2021 count
Owner
State
State Highway Agency

About this bridge

U.S. 68/80 over Tenn.River/Ky Lake is a steel continuous arch - thru carrying U.S. 68/80 over Tenn.River/Ky Lake in Marshall County, Kentucky. It was built in 2016, so it is 9 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,070 vehicles a day, roughly 11% of them trucks, projected to reach 3,070 by 2041. The structure is 3,611 ft (1,100.6 m) long and 75 ft wide.

Location

Open in Google Maps
CarriesU.S. 68/80
CrossesTenn.River/Ky Lake
LocationAcross Ky Lake
RouteU.S. Route 68
CountyMarshall County
StateKentucky
Coordinates36.77278, -88.12028
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating53.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeArch - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+9 approach)
Design loadGreater than HL 93
Structure length3,611 ft (1,100.6 m)
Longest span550 ft (167.6 m)
Deck width75 ft (23 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deck23 ft (7 m)

Traffic and service

Average daily traffic3,070 (2021)
Projected traffic3,070 by 2041
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was U.S. 68/80 over Tenn.River/Ky Lake built?

It was built in 2016, making it 9 years old in 2025.

What condition is U.S. 68/80 over Tenn.River/Ky Lake 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 July 2024.

How much traffic does U.S. 68/80 over Tenn.River/Ky Lake carry?

About 3,070 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is U.S. 68/80 over Tenn.River/Ky Lake?

The structure is 3,611 ft (1,100.6 m) long with a longest span of 550 ft (167.6 m) and a deck 75 ft wide.

Who owns U.S. 68/80 over Tenn.River/Ky Lake?

It is owned by the State Highway Agency.