US Bridges

CR-578 over I-75 (SR-93)

Good

Pasco County, Florida · 3.6MI N/O SR-52 · Structure no. 140940

Built
1965
60 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
215 ft
4 main spans
Daily traffic
1,700
2025 count
Owner
State
State Highway Agency

About this bridge

CR-578 over I-75 (SR-93) is a prestressed concrete stringer/multi-beam or girder carrying CR-578 over I-75 (SR-93) in Pasco County, Florida. It was built in 1965, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,700 vehicles a day, roughly 1% of them trucks, projected to reach 2,949 by 2045. The structure is 215 ft (65.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR-578
CrossesI-75 (SR-93)
Location3.6MI N/O SR-52
RouteCounty Highway 578
CountyPasco County
StateFlorida
Coordinates28.37597, -82.3195
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length215 ft (65.6 m)
Longest span69 ft (21.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2025)
Projected traffic2,949 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 CR-578 over I-75 (SR-93) built?

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

What condition is CR-578 over I-75 (SR-93) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does CR-578 over I-75 (SR-93) carry?

About 1,700 vehicles per day (2025 count), of which roughly 1% are trucks.

How long is CR-578 over I-75 (SR-93)?

The structure is 215 ft (65.6 m) long with a longest span of 69 ft (21.1 m) and a deck 34 ft wide.

Who owns CR-578 over I-75 (SR-93)?

It is owned by the State Highway Agency.