Structure 19SR1550064 · Davidson County, TN

Fap 408 (sr 155) over Sr155-br#9-rmps-a&c

Carries Fap 408 (sr 155) over Sr155-br#9-rmps-a&c, 2 M NE I40.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT459 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

459 ft end to end, longest span 77 ft: about 6 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.

Built200125 years old
Length459.3 ft140 m
Daily traffic47,778counted 2021
Last inspectedApril 2023every 24 months

Location

StateTennessee
CountyDavidson
Location2 M NE I40
CarriesFap 408 (sr 155)
CrossesSr155-br#9-rmps-a&c
Coordinates36.15660, -86.85902

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length459.3 ft (140 m)
Max Span77.1 ft (23.5 m)
Deck Width45.9 ft (14 m)
Deck Area1,960 sq m
Main Spans6
Year Built2001

Traffic

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

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number19SR1550064

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.

Nearby Bridges