Structure 105602 · Hillsborough County, FL

Sligh Avenue over Hillsborough River

Carries Sligh Avenue over Hillsborough River, 0.3mi W Of Bus 41 Fl AVE.

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 FT271 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

271 ft end to end, longest span 54 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.

Built196066 years old
Length271.0 ft82.6 m
Daily traffic27,100counted 2022
Last inspectedJanuary 2024every 24 months

Location

StateFlorida
CountyHillsborough
Location0.3mi W Of Bus 41 Fl AVE
CarriesSligh Avenue
CrossesHillsborough River
Coordinates28.01067, -82.46487

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length271.0 ft (82.6 m)
Max Span54.1 ft (16.5 m)
Deck Width53.8 ft (16.4 m)
Deck Area1354.6 sq m
Main Spans5
Year Built1960

Traffic

Avg Daily Traffic27,100 (2022)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number105602

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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