Structure 100721 · Hillsborough County, FL

Sr618 WB To I-4 WB over Csx Rr SR 60 & 34th ST

Carries Sr618 WB To I-4 WB over Csx Rr SR 60 & 34th ST, Sr-618 WB Off-ramp.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,983 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,983 ft end to end, longest span 252 ft: about 5.5 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 segmental box-girder bridge.

Built201313 years old
Length1982.9 ft604.4 m
Daily traffic17,900counted 2023
Last inspectedDecember 2023every 24 months

Location

StateFlorida
CountyHillsborough
LocationSr-618 WB Off-ramp
CarriesSr618 WB To I-4 WB
CrossesCsx Rr SR 60 & 34th ST
Coordinates27.95446, -82.42476

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length1982.9 ft (604.4 m)
Max Span251.6 ft (76.7 m)
Deck Width43.0 ft (13.1 m)
Deck Area7917.6 sq m
Main Spans11
Year Built2013

Traffic

Avg Daily Traffic17,900 (2023)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100721

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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