US Bridges

CO 3/21 over I-77 NB and SB

Fair

Raleigh County, West Virginia · 0.36 Mi. E. of Cr. 3/18 · Structure no. 00000000041A178

Built
1983
42 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
249 ft
1 main span
Daily traffic
1,700
2022 count
Owner
State
State Highway Agency

About this bridge

CO 3/21 over I-77 NB and SB is a steel continuous stringer/multi-beam or girder carrying CO 3/21 over I-77 NB and SB in Raleigh County, West Virginia. It was built in 1983, so it is 42 years old, younger 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 1,700 vehicles a day, roughly 6% of them trucks, projected to reach 3,128 by 2042. The structure is 249 ft (75.9 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCO 3/21
CrossesI-77 NB and SB
Location0.36 Mi. E. of Cr. 3/18
RouteCounty Highway 321
CountyRaleigh County
StateWest Virginia
Coordinates37.77283, -81.22029
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHS 20 + Mod
Structure length249 ft (75.9 m)
Longest span126 ft (38.4 m)
Deck width47 ft (14.4 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2022)
Projected traffic3,128 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO 3/21 over I-77 NB and SB built?

It was built in 1983, making it 42 years old in 2025.

What condition is CO 3/21 over I-77 NB and SB 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 2024.

How much traffic does CO 3/21 over I-77 NB and SB carry?

About 1,700 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is CO 3/21 over I-77 NB and SB?

The structure is 249 ft (75.9 m) long with a longest span of 126 ft (38.4 m) and a deck 47 ft wide.

Who owns CO 3/21 over I-77 NB and SB?

It is owned by the State Highway Agency.