Structure 31A160 · Monongalia County, WV

I 79 SB over Whiteday Crk & CR 73/01_

Carries I 79 SB over Whiteday Crk & CR 73/01_, 3.28 Mi South Co RT 77.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT497 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

497 ft end to end: about 7 semi-trucks nose to tail. 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.

Built196957 years old
Length497.4 ft151.6 m
Daily traffic15,800counted 2022
Last inspectedMay 2024every 24 months

Location

StateWest Virginia
CountyMonongalia
Location3.28 Mi South Co RT 77
CarriesI 79 SB
CrossesWhiteday Crk & CR 73/01_
Coordinates39.51991, -80.04170

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length497.4 ft (151.6 m)
Max Span128.0 ft (39 m)
Deck Width36.7 ft (11.2 m)
Deck Area1697.9 sq m
Main Spans1
Year Built1969

Traffic

Avg Daily Traffic15,800 (2022)
Truck Traffic16%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number00000000031A160

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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