US Bridges

I-77 Ramp E over Piedmont L Sullivan Knwa

Fair

Kanawha County, West Virginia · 1.14 MI N of Wv 114 · Structure no. 00000000020A411

Built
1975
50 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
647 ft
7 main spans
Daily traffic
12,662
2016 count
Owner
State
State Highway Agency

About this bridge

I-77 Ramp E over Piedmont L Sullivan Knwa is a steel continuous box beam or girders - multiple carrying I-77 Ramp E over Piedmont L Sullivan Knwa in Kanawha County, West Virginia. It was built in 1975, so it is 50 years old, older than the West Virginia average of 44.7 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 12,662 vehicles a day, roughly 18% of them trucks, projected to reach 13,928 by 2036. The structure is 647 ft (197.2 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI-77 Ramp E
CrossesPiedmont L Sullivan Knwa
Location1.14 MI N of Wv 114
RouteInterstate 7700
CountyKanawha County
StateWest Virginia
Coordinates38.35223, -81.62667
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7 (+1 approach)
Design loadHS 20 + Mod
Structure length647 ft (197.2 m)
Longest span110 ft (33.5 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,662 (2016)
Projected traffic13,928 by 2036
Trucks18%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-77 Ramp E over Piedmont L Sullivan Knwa built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-77 Ramp E over Piedmont L Sullivan Knwa 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 May 2024.

How much traffic does I-77 Ramp E over Piedmont L Sullivan Knwa carry?

About 12,662 vehicles per day (2016 count), of which roughly 18% are trucks.

How long is I-77 Ramp E over Piedmont L Sullivan Knwa?

The structure is 647 ft (197.2 m) long with a longest span of 110 ft (33.5 m) and a deck 34 ft wide.

Who owns I-77 Ramp E over Piedmont L Sullivan Knwa?

It is owned by the State Highway Agency.