Structure 940A1540001 · Williamson County, TN

Fau 4527 350347y over Csx Railroad

Carries Fau 4527 350347y over Csx Railroad, In City Of Brentwood.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT65 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

65 ft end to end. Lengths and the car 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.

Built199036 years old
Length65.0 ft19.8 m
Daily traffic10,558counted 2021
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountyWilliamson
LocationIn City Of Brentwood
CarriesFau 4527 350347y
CrossesCsx Railroad
Coordinates35.97750, -86.77509

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Single/Spread
Total Length65.0 ft (19.8 m)
Max Span60.0 ft (18.3 m)
Deck Width38.1 ft (11.6 m)
Deck Area229.7 sq m
Main Spans1
Year Built1990

Traffic

Avg Daily Traffic10,558 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number940A1540001

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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