Structure 20608 · Smyth County, VA

East Chilhowie ST over Mf Holston River

Carries East Chilhowie ST over Mf Holston River, .04 N Main & .04 Prater.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 7/9

85 ft end to end. Lengths and the car 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 through truss.

Built1885141 years old
Length85.0 ft25.9 m
Daily traffic168counted 2022
Last inspectedMay 2017every 24 months

Location

StateVirginia
CountySmyth
Location.04 N Main & .04 Prater
CarriesEast Chilhowie ST
CrossesMf Holston River
Coordinates36.83811, -81.51524

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length85.0 ft (25.9 m)
Max Span85.0 ft (25.9 m)
Deck Width27.9 ft (8.5 m)
Deck Area220.2 sq m
Main Spans1
Year Built1885

Traffic

Avg Daily Traffic168 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2017
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000020608

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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