Structure 19SR0450001 · Davidson County, TN

Fau 45 over Cumberland River

Carries Fau 45 over Cumberland River, 2 M E Jct Sr6&sr45.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,220 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 5/9

1,220 ft end to end, longest span 322 ft: about 3.4 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 through truss.

Built196759 years old
Length1220.1 ft371.9 m
Daily traffic32,950counted 2021
Last inspectedMarch 2023every 24 months

Location

StateTennessee
CountyDavidson
Location2 M E Jct Sr6&sr45
CarriesFau 45
CrossesCumberland River
Coordinates36.26258, -86.67619

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length1220.1 ft (371.9 m)
Max Span321.9 ft (98.1 m)
Deck Width58.1 ft (17.7 m)
Deck Area6582.6 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic32,950 (2021)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number19SR0450001

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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