US Bridges

CR-577 (lake Iola) over I-75/SR-93

Good

Pasco County, Florida · 5.5 MI North of SR-52 · Structure no. 140042

Built
1965
60 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
306 ft
4 main spans
Daily traffic
2,200
2025 count
Owner
State
State Highway Agency

About this bridge

CR-577 (lake Iola) over I-75/SR-93 is a prestressed concrete stringer/multi-beam or girder carrying CR-577 (lake Iola) 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 2,200 vehicles a day, roughly 10% of them trucks, projected to reach 3,817 by 2045. The structure is 306 ft (93.2 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR-577 (lake Iola)
CrossesI-75/SR-93
Location5.5 MI North of SR-52
RouteCounty Highway 577
CountyPasco County
StateFlorida
Coordinates28.40159, -82.31183
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length306 ft (93.2 m)
Longest span79 ft (24.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2025)
Projected traffic3,817 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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-577 (lake Iola) over I-75/SR-93 built?

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

What condition is CR-577 (lake Iola) 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-577 (lake Iola) over I-75/SR-93 carry?

About 2,200 vehicles per day (2025 count), of which roughly 10% are trucks.

How long is CR-577 (lake Iola) over I-75/SR-93?

The structure is 306 ft (93.2 m) long with a longest span of 79 ft (24.1 m) and a deck 34 ft wide.

Who owns CR-577 (lake Iola) over I-75/SR-93?

It is owned by the State Highway Agency.