US Bridges

SR-597 Dale Mabry over SR-580 and CSX RR

Fair

Hillsborough County, Florida · 2.8MI North of US-92 · Structure no. 100085

Built
1965
60 years old, rebuilt 1988
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
259 ft
5 main spans
Daily traffic
32,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR-597 Dale Mabry over SR-580 and CSX RR is a prestressed concrete stringer/multi-beam or girder carrying SR-597 Dale Mabry over SR-580 and CSX RR in Hillsborough County, Florida. It was built in 1965 and reconstructed in 1988, so it is 60 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 32,500 vehicles a day, roughly 7% of them trucks, projected to reach 56,388 by 2044. The structure is 259 ft (79 m) long and 67 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR-597 Dale Mabry
CrossesSR-580 and CSX RR
Location2.8MI North of US-92
RouteState Highway 597
CountyHillsborough County
StateFlorida
Coordinates28.03645, -82.50501
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating67 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length259 ft (79 m)
Longest span53 ft (16.2 m)
Deck width67 ft (20.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,500 (2022)
Projected traffic56,388 by 2044
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-597 Dale Mabry over SR-580 and CSX RR built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.

What condition is SR-597 Dale Mabry over SR-580 and CSX RR 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 2023.

How much traffic does SR-597 Dale Mabry over SR-580 and CSX RR carry?

About 32,500 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR-597 Dale Mabry over SR-580 and CSX RR?

The structure is 259 ft (79 m) long with a longest span of 53 ft (16.2 m) and a deck 67 ft wide.

Who owns SR-597 Dale Mabry over SR-580 and CSX RR?

It is owned by the State Highway Agency.