Structure 17013 · Shenandoah County, VA

I-81 Nbl over N Fork Shenandoah River

Carries I-81 Nbl over N Fork Shenandoah River, 3.68 Fr 211 - 0.37 To 730.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT692 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

692 ft end to end, longest span 63 ft: about 1.9 football fields. 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.

Built196660 years old
Length691.9 ft210.9 m
Daily traffic27,158counted 2022
Last inspectedAugust 2024every 24 months

Location

StateVirginia
CountyShenandoah
Location3.68 Fr 211 - 0.37 To 730
CarriesI-81 Nbl
CrossesN Fork Shenandoah River
Coordinates38.69861, -78.65434

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length691.9 ft (210.9 m)
Max Span62.7 ft (19.1 m)
Deck Width34.1 ft (10.4 m)
Deck Area2193.4 sq m
Main Spans11
Year Built1966

Traffic

Avg Daily Traffic27,158 (2022)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000017013

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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