US Bridges

SR-574 (mlk Blvd) over Tampa Bypass Canal

Fair

Hillsborough County, Florida · 0.3 MI East of US-301 · Structure no. 100334

Built
1972
53 years old, rebuilt 1987
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
733 ft
15 main spans
Daily traffic
32,000
2024 count
Owner
State
State Highway Agency

About this bridge

SR-574 (mlk Blvd) over Tampa Bypass Canal is a prestressed concrete stringer/multi-beam or girder carrying SR-574 (mlk Blvd) over Tampa Bypass Canal in Hillsborough County, Florida. It was built in 1972 and reconstructed in 1987, so it is 53 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 32,000 vehicles a day, roughly 9% of them trucks, projected to reach 55,520 by 2044. The structure is 733 ft (223.4 m) long and 111 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR-574 (mlk Blvd)
CrossesTampa Bypass Canal
Location0.3 MI East of US-301
RouteState Highway 574
CountyHillsborough County
StateFlorida
Coordinates27.98144, -82.35447
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating36.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans15
Design loadHS 20
Structure length733 ft (223.4 m)
Longest span50 ft (15.1 m)
Deck width111 ft (33.7 m)
Roadway width94 ft (28.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2024)
Projected traffic55,520 by 2044
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-574 (mlk Blvd) over Tampa Bypass Canal built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1987.

What condition is SR-574 (mlk Blvd) over Tampa Bypass Canal 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 June 2024.

How much traffic does SR-574 (mlk Blvd) over Tampa Bypass Canal carry?

About 32,000 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SR-574 (mlk Blvd) over Tampa Bypass Canal?

The structure is 733 ft (223.4 m) long with a longest span of 50 ft (15.1 m) and a deck 111 ft wide.

Who owns SR-574 (mlk Blvd) over Tampa Bypass Canal?

It is owned by the State Highway Agency.