Structure 720A6810001 · Rhea County, TN

Nfa A523 over Little Richland Creek

Carries Nfa A523 over Little Richland Creek, 5 Mi NW Jct Sr29 & Sr30.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 34 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built200323 years old
Length34.1 ft10.4 m
Daily traffic130counted 2020
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyRhea
Location5 Mi NW Jct Sr29 & Sr30
CarriesNfa A523
CrossesLittle Richland Creek
Coordinates35.53641, -84.97895

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length34.1 ft (10.4 m)
Max Span16.1 ft (4.9 m)
Deck Width27.6 ft (8.4 m)
Deck Area87.4 sq m
Main Spans2
Year Built2003

Traffic

Avg Daily Traffic130 (2020)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number720A6810001

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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