Structure 33I00750090 · Hamilton County, TN

I75 SB over Spring Creek

Carries I75 SB over Spring Creek, I24 I75 Interchange.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT129 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

129 ft end to end. 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.

Built20215 years old
Length129.3 ft39.4 m
Daily traffic110,752counted 2021
Last inspectedJuly 2024every 24 months

Location

StateTennessee
CountyHamilton
LocationI24 I75 Interchange
CarriesI75 SB
CrossesSpring Creek
Coordinates35.00103, -85.21132

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length129.3 ft (39.4 m)
Max Span124.3 ft (37.9 m)
Deck Width62.3 ft (19 m)
Deck Area748.6 sq m
Main Spans1
Year Built2021

Traffic

Avg Daily Traffic110,752 (2021)
Truck Traffic7%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number33I00750090

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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