Structure 19580 · Wythe County, VA

I-77 Nbl over RTE 629

Carries I-77 Nbl over RTE 629, 6.73 Car Cl & 1.56 To 81.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT134 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

134 ft end to end, longest span 46 ft. 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 tee-beam bridge.

Built197848 years old
Length134.2 ft40.9 m
Daily traffic21,266counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateVirginia
CountyWythe
Location6.73 Car Cl & 1.56 To 81
CarriesI-77 Nbl
CrossesRTE 629
Coordinates36.92999, -80.90956

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length134.2 ft (40.9 m)
Max Span45.9 ft (14 m)
Deck Width44.0 ft (13.4 m)
Deck Area548.1 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic21,266 (2022)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000019580

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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