Structure 33I00240051 · Hamilton County, TN

Fau 4984 over S. Crest / I24 & E. Main

Carries Fau 4984 over S. Crest / I24 & E. Main, S. Crest / I-24 & E. Main.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT615 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 7/9

615 ft end to end, longest span 155 ft: about 1.7 football fields. 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.

Built196462 years old
Length614.8 ft187.4 m
Daily traffic879counted 2021
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyHamilton
LocationS. Crest / I-24 & E. Main
CarriesFau 4984
CrossesS. Crest / I24 & E. Main
Coordinates35.02222, -85.26120

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length614.8 ft (187.4 m)
Max Span154.9 ft (47.2 m)
Deck Width34.1 ft (10.4 m)
Deck Area1949.0 sq m
Main Spans5
Year Built1964

Traffic

Avg Daily Traffic879 (2021)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number33I00240051

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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