Structure 59SR0110029 · Marshall County, TN

Fap 11 over Duck River

Carries Fap 11 over Duck River, .5 S Jct Sr99&sr11.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT436 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

436 ft end to end, longest span 121 ft: about 6 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.

Built196561 years old
Length436.0 ft132.9 m
Daily traffic6,883counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyMarshall
Location.5 S Jct Sr99&sr11
CarriesFap 11
CrossesDuck River
Coordinates35.59243, -86.69644

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length436.0 ft (132.9 m)
Max Span121.1 ft (36.9 m)
Deck Width36.7 ft (11.2 m)
Deck Area1488.5 sq m
Main Spans4
Year Built1965

Traffic

Avg Daily Traffic6,883 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number59SR0110029

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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