Structure 89021380001 · Warren County, TN

Nfa 2138 (sa 8920) over Collins River

Carries Nfa 2138 (sa 8920) over Collins River, 1.4mi East Of Sr56.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT421 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 6/9

421 ft end to end, longest span 75 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.

Built1938rebuilt 1987
Length421.3 ft128.4 m
Daily traffic570counted 2021
Last inspectedApril 2023every 24 months

Location

StateTennessee
CountyWarren
Location1.4mi East Of Sr56
CarriesNfa 2138 (sa 8920)
CrossesCollins River
Coordinates35.58139, -85.70084

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length421.3 ft (128.4 m)
Max Span75.1 ft (22.9 m)
Deck Width30.8 ft (9.4 m)
Deck Area1207.0 sq m
Main Spans4
Year Built1938 (reconstructed 1987)

Traffic

Avg Daily Traffic570 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number89021380001

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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