Structure 11I00400005 · Cheatham County, TN

Nfa A372 over Luyben Hills Rd. / I-40

Carries Nfa A372 over Luyben Hills Rd. / I-40, 3.65 M.ne. Williamson Co..

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT305 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

305 ft end to end, longest span 84 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 multi-beam bridge.

Built1960rebuilt 2007
Length304.8 ft92.9 m
Daily traffic9,010counted 2020
Last inspectedJuly 2024every 24 months

Location

StateTennessee
CountyCheatham
Location3.65 M.ne. Williamson Co.
CarriesNfa A372
CrossesLuyben Hills Rd. / I-40
Coordinates36.08360, -87.09785

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length304.8 ft (92.9 m)
Max Span84.0 ft (25.6 m)
Deck Width53.8 ft (16.4 m)
Deck Area1523.6 sq m
Main Spans4
Year Built1960 (reconstructed 2007)

Traffic

Avg Daily Traffic9,010 (2020)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number11I00400005

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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