Structure 82SR1370031 · Sullivan County, TN

Fau 3900 over SR 137

Carries Fau 3900 over SR 137, In Kingsport.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT347 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 8/9

347 ft end to end: about 5 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 box-beam bridge.

Built198343 years old
Length346.8 ft105.7 m
Daily traffic1,264counted 2021
Last inspectedApril 2023every 24 months

Location

StateTennessee
CountySullivan
LocationIn Kingsport
CarriesFau 3900
CrossesSR 137
Coordinates36.57425, -82.58040

Physical Characteristics

MaterialSteel
DesignBox Beam - Single/Spread
Total Length346.8 ft (105.7 m)
Max Span252.0 ft (76.8 m)
Deck Width36.1 ft (11 m)
Deck Area1162.7 sq m
Main Spans1
Year Built1983

Traffic

Avg Daily Traffic1,264 (2021)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number82SR1370031

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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