US Bridges

I-77 Ramp H South over Piedmont Road

Fair

Kanawha County, West Virginia · 0.86 MI N of Wv 114 · Structure no. 00000000020A415

Built
1975
50 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
470 ft
1 main span
Daily traffic
4,073
2017 count
Owner
State
State Highway Agency

About this bridge

I-77 Ramp H South over Piedmont Road is a steel continuous box beam or girders - single or spread carrying I-77 Ramp H South over Piedmont Road 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 5 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 4,073 vehicles a day, roughly 17% of them trucks, projected to reach 4,480 by 2037. The structure is 470 ft (143.2 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-77 Ramp H South
CrossesPiedmont Road
Location0.86 MI N of Wv 114
RouteInterstate 7700
CountyKanawha County
StateWest Virginia
Coordinates38.35132, -81.62284
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating97 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+3 approach)
Design loadHS 20 + Mod
Structure length470 ft (143.2 m)
Longest span162 ft (49.3 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,073 (2017)
Projected traffic4,480 by 2037
Trucks17%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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$10,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-77 Ramp H South over Piedmont Road built?

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

What condition is I-77 Ramp H South over Piedmont Road 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 H South over Piedmont Road carry?

About 4,073 vehicles per day (2017 count), of which roughly 17% are trucks.

How long is I-77 Ramp H South over Piedmont Road?

The structure is 470 ft (143.2 m) long with a longest span of 162 ft (49.3 m) and a deck 26 ft wide.

Who owns I-77 Ramp H South over Piedmont Road?

It is owned by the State Highway Agency.