Structure 11SR0490001 · Cheatham County, TN

Fap 49 over Sr-49 / Harpeth River

Carries Fap 49 over Sr-49 / Harpeth River, 5 Mi.west 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 FT1,040 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

1,040 ft end to end, longest span 200 ft: about 2.9 football fields. 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.

Built201412 years old
Length1040.0 ft317 m
Daily traffic3,006counted 2021
Last inspectedJuly 2024every 24 months

Location

StateTennessee
CountyCheatham
Location5 Mi.west Of Ashland City
CarriesFap 49
CrossesSr-49 / Harpeth River
Coordinates36.28667, -87.14667

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1040.0 ft (317 m)
Max Span200.1 ft (61 m)
Deck Width45.3 ft (13.8 m)
Deck Area4374.6 sq m
Main Spans3
Year Built2014

Traffic

Avg Daily Traffic3,006 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number11SR0490001

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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