Structure 36SR1280001 · Hardin County, TN

SR 128 over Tenn. River & Plant Road

Carries SR 128 over Tenn. River & Plant Road, Pickwick Dam.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,620 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

3,620 ft end to end, longest span 210 ft: about 10 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 girder bridge.

Built1963rebuilt 1978
Length3620.1 ft1103.4 m
Daily traffic6,357counted 2021
Last inspectedJuly 2023every 24 months

Location

StateTennessee
CountyHardin
LocationPickwick Dam
CarriesSR 128
CrossesTenn. River & Plant Road
Coordinates35.07361, -88.25111

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length3620.1 ft (1103.4 m)
Max Span210.0 ft (64 m)
Deck Width39.7 ft (12.1 m)
Deck Area13351.1 sq m
Main Spans18
Year Built1963 (reconstructed 1978)

Traffic

Avg Daily Traffic6,357 (2021)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCode 67
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number36SR1280001

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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