US Bridges

North Blvd. over Hillsborough River

Fair

Hillsborough County, Florida · 0.5 Mi. S of Columbus Dr. · Structure no. 105600

Built
1959
66 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
811 ft
3 main spans
Daily traffic
9,100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Blvd. over Hillsborough River is a steel continuous stringer/multi-beam or girder carrying North Blvd. over Hillsborough River in Hillsborough County, Florida. It was built in 1959, so it is 66 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,100 vehicles a day, roughly 12% of them trucks, projected to reach 15,615 by 2042. The structure is 811 ft (247.2 m) long and 54 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNorth Blvd.
CrossesHillsborough River
Location0.5 Mi. S of Columbus Dr.
RouteCity Street 0
CountyHillsborough County
StateFlorida
Coordinates27.96019, -82.46797
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.3 US tons
Inventory rating43.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+10 approach)
Design loadHS 20
Structure length811 ft (247.2 m)
Longest span90 ft (27.4 m)
Deck width54 ft (16.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2023)
Projected traffic15,615 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$3.6 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was North Blvd. over Hillsborough River built?

It was built in 1959, making it 66 years old in 2025.

What condition is North Blvd. over Hillsborough River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.

How much traffic does North Blvd. over Hillsborough River carry?

About 9,100 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is North Blvd. over Hillsborough River?

The structure is 811 ft (247.2 m) long with a longest span of 90 ft (27.4 m) and a deck 54 ft wide.

Who owns North Blvd. over Hillsborough River?

It is owned by the City or Municipal Highway Agency.