Structure 59SR0110017 · Marshall County, TN

Fau 11 over Rock Creek

Carries Fau 11 over Rock Creek, .4 M S Jct Sr50&sr11.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT171 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

171 ft end to end, longest span 29 ft: about 2 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 tee-beam bridge.

Built1928rebuilt 1948
Length171.3 ft52.2 m
Daily traffic4,545counted 2021
Last inspectedAugust 2024every 24 months

Location

StateTennessee
CountyMarshall
Location.4 M S Jct Sr50&sr11
CarriesFau 11
CrossesRock Creek
Coordinates35.44360, -86.79229

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length171.3 ft (52.2 m)
Max Span28.5 ft (8.7 m)
Deck Width64.6 ft (19.7 m)
Deck Area1028.3 sq m
Main Spans6
Year Built1928 (reconstructed 1948)

Traffic

Avg Daily Traffic4,545 (2021)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number59SR0110017

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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