US Bridges

Laurel Street over Hillsborough River

FairPosted for load

Hillsborough County, Florida · Downtown Tampa · Structure no. 105503

Built
1926
99 years old, rebuilt 1969
Condition
Fair
inspected March 2023
Type
Movable - Bascule
Steel
Length
366 ft
1 main span
Daily traffic
7,700
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Laurel Street over Hillsborough River is a steel movable - bascule carrying Laurel Street over Hillsborough River in Hillsborough County, Florida. It was built in 1926 and reconstructed in 1969, so it is 99 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 7,700 vehicles a day, roughly 3% of them trucks, projected to reach 9,625 by 2042. The structure is 366 ft (111.5 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLaurel Street
CrossesHillsborough River
LocationDowntown Tampa
RouteCity Street 0
StateFlorida
Coordinates27.9545, -82.46492
Functional classUrban Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadH 15
Structure length366 ft (111.5 m)
Longest span99 ft (30.3 m)
Deck width60 ft (18.4 m)
Roadway width39 ft (12 m)
Vertical clearance over deck20 ft (6 m)

Traffic and service

Average daily traffic7,700 (2023)
Projected traffic9,625 by 2042
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Laurel Street over Hillsborough River built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1969.

What condition is Laurel Street 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 March 2023.

How much traffic does Laurel Street over Hillsborough River carry?

About 7,700 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Laurel Street over Hillsborough River?

The structure is 366 ft (111.5 m) long with a longest span of 99 ft (30.3 m) and a deck 60 ft wide.

Who owns Laurel Street over Hillsborough River?

It is owned by the City or Municipal Highway Agency.