Structure 105600 · Hillsborough County, FL

North Blvd. over Hillsborough River

Carries North Blvd. over Hillsborough River, 0.5 Mi. S Of Columbus Dr..

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT811 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

811 ft end to end, longest span 90 ft: about 2.3 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 multi-beam bridge.

Built195967 years old
Length811.0 ft247.2 m
Daily traffic9,100counted 2023
Last inspectedFebruary 2025every 24 months

Location

StateFlorida
CountyHillsborough
Location0.5 Mi. S Of Columbus Dr.
CarriesNorth Blvd.
CrossesHillsborough River
Coordinates27.96019, -82.46797

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length811.0 ft (247.2 m)
Max Span89.9 ft (27.4 m)
Deck Width54.1 ft (16.5 m)
Deck Area4078.8 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic9,100 (2023)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number105600

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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