Structure 28A208 · Mercer County, WV

I-77 NB over Mercer County Route 3

Carries I-77 NB over Mercer County Route 3, 2.76 Mi S Of US 19.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT125 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 6/9 · sets the ratingSubstructure 7/9

125 ft end to end. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built197749 years old
Length125.0 ft38.1 m
Daily traffic28,453counted 2023
Last inspectedOctober 2024every 24 months

Location

StateWest Virginia
CountyMercer
Location2.76 Mi S Of US 19
CarriesI-77 NB
CrossesMercer County Route 3
Coordinates37.47033, -81.06704

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length125.0 ft (38.1 m)
Max Span50.9 ft (15.5 m)
Deck Width44.6 ft (13.6 m)
Deck Area518.2 sq m
Main Spans1
Year Built1977

Traffic

Avg Daily Traffic28,453 (2023)
Truck Traffic32%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number00000000028A208

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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