Structure 600A4920001 · Maury County, TN

Fau 3209 over Duck River

Carries Fau 3209 over Duck River, .5 M NW Jct Sr50&3209.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT461 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

461 ft end to end, longest span 185 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.

Built201016 years old
Length461.0 ft140.5 m
Daily traffic6,129counted 2021
Last inspectedJuly 2024every 24 months

Location

StateTennessee
CountyMaury
Location.5 M NW Jct Sr50&3209
CarriesFau 3209
CrossesDuck River
Coordinates35.63508, -87.07117

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length461.0 ft (140.5 m)
Max Span184.7 ft (56.3 m)
Deck Width41.3 ft (12.6 m)
Deck Area1770.3 sq m
Main Spans3
Year Built2010

Traffic

Avg Daily Traffic6,129 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number600A4920001

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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