Structure 100293 · Hillsborough County, FL

I-4 EB (sr-400 Eb) over Tampa Bypass Canal

Carries I-4 EB (sr-400 Eb) over Tampa Bypass Canal, 0.5 Mi East Of Us-301.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT525 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

525 ft end to end, longest span 45 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.

Built1977rebuilt 2001
Length525.3 ft160.1 m
Daily traffic76,250counted 2023
Last inspectedMarch 2023every 24 months

Location

StateFlorida
CountyHillsborough
Location0.5 Mi East Of Us-301
CarriesI-4 EB (sr-400 Eb)
CrossesTampa Bypass Canal
Coordinates27.99556, -82.35077

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length525.3 ft (160.1 m)
Max Span44.6 ft (13.6 m)
Deck Width63.6 ft (19.4 m)
Deck Area3105.9 sq m
Main Spans12
Year Built1977 (reconstructed 2001)

Traffic

Avg Daily Traffic76,250 (2023)
Truck Traffic12%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100293

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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