Structure 11SR0120007 · Cheatham County, TN

Fap 12 over Sycamore Creek

Carries Fap 12 over Sycamore Creek, 3.6 Mi.nw.of Ashland City.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT318 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

318 ft end to end, longest span 53 ft: about 4 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 box-beam bridge.

Built1949rebuilt 2011
Length317.9 ft96.9 m
Daily traffic6,222counted 2021
Last inspectedJuly 2024every 24 months

Location

StateTennessee
CountyCheatham
Location3.6 Mi.nw.of Ashland City
CarriesFap 12
CrossesSycamore Creek
Coordinates36.32983, -87.12168

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Single/Spread
Total Length317.9 ft (96.9 m)
Max Span53.1 ft (16.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area949.6 sq m
Main Spans6
Year Built1949 (reconstructed 2011)

Traffic

Avg Daily Traffic6,222 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number11SR0120007

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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