Structure 510A1410001 · Lewis County, TN

Nfa 935 over Branch

Carries Nfa 935 over Branch, 2 M. W. Gordonsburg..

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 20 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built198739 years old
Length20.0 ft6.1 m
Daily traffic106counted 2021
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountyLewis
Location2 M. W. Gordonsburg.
CarriesNfa 935
CrossesBranch
Coordinates35.57592, -87.45782

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length20.0 ft (6.1 m)
Max Span9.8 ft (3 m)
Deck Width25.6 ft (7.8 m)
Deck Area47.6 sq m
Main Spans2
Year Built1987

Traffic

Avg Daily Traffic106 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number510A1410001

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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