Structure 790A0540001 · Shelby County, TN

Nfa C132 over Branch

Carries Nfa C132 over Branch, Chambers RD - Shelby Co.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

68 ft end to end, longest span 17 ft. Lengths and the car 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 channel-beam bridge.

Built196957 years old
Length67.9 ft20.7 m
Daily traffic270counted 2020
Last inspectedMay 2023every 24 months

Location

StateTennessee
CountyShelby
LocationChambers RD - Shelby Co
CarriesNfa C132
CrossesBranch
Coordinates35.36147, -89.94728

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length67.9 ft (20.7 m)
Max Span17.1 ft (5.2 m)
Deck Width32.5 ft (9.9 m)
Deck Area204.9 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic270 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number790A0540001

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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