Structure 33044170001 · Hamilton County, TN

Fau 4417 736937r over Csx & Ns Railroad

Carries Fau 4417 736937r over Csx & Ns Railroad, Central Ave-chattanooga.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT293 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

293 ft end to end, longest span 173 ft: about 4 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.

Built199432 years old
Length293.0 ft89.3 m
Daily traffic11,885counted 2021
Last inspectedJanuary 2025every 24 months

Location

StateTennessee
CountyHamilton
LocationCentral Ave-chattanooga
CarriesFau 4417 736937r
CrossesCsx & Ns Railroad
Coordinates35.03590, -85.29411

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length293.0 ft (89.3 m)
Max Span172.9 ft (52.7 m)
Deck Width70.9 ft (21.6 m)
Deck Area1928.9 sq m
Main Spans3
Year Built1994

Traffic

Avg Daily Traffic11,885 (2021)
Truck Traffic4%
Lanes On Bridge5

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number33044170001

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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