Structure 33I00240015 · Hamilton County, TN

I24 Ebl over I24 Eb/i24eb Rp To I124n

Carries I24 Ebl over I24 Eb/i24eb Rp To I124n, I24 & I124 Intersection.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT486 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

486 ft end to end, longest span 135 ft: about 7 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.

Built199036 years old
Length485.9 ft148.1 m
Daily traffic—reported figure implausible
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyHamilton
LocationI24 & I124 Intersection
CarriesI24 Ebl
CrossesI24 Eb/i24eb Rp To I124n
Coordinates35.03207, -85.31945

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length485.9 ft (148.1 m)
Max Span134.8 ft (41.1 m)
Deck Width47.9 ft (14.6 m)
Deck Area2162.3 sq m
Main Spans4
Year Built1990

Traffic

Avg Daily Traffic105,057 (2021)
That is about 52,528 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number33I00240015

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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