Structure 19I00400163 · Davidson County, TN

Fap 408 (sr 155) over 6 Routes

Carries Fap 408 (sr 155) over 6 Routes, I-40 Exit 204.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
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 FT3,628 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

3,628 ft end to end, longest span 239 ft: about 10 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.

Built200125 years old
Length3628.0 ft1105.8 m
Daily traffic47,778counted 2021
Last inspectedNovember 2023every 24 months

Location

StateTennessee
CountyDavidson
LocationI-40 Exit 204
CarriesFap 408 (sr 155)
Crosses6 Routes
Coordinates36.15596, -86.85858

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length3628.0 ft (1105.8 m)
Max Span238.5 ft (72.7 m)
Deck Width43.3 ft (13.2 m)
Deck Area14596.6 sq m
Main Spans8
Year Built2001

Traffic

Avg Daily Traffic47,778 (2021)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge23

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number19I00400163

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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