US Bridges

CR-578A/DARBY RD over Cypress Creek

Good

Pasco County, Florida · 0.9MI West of I-75 · Structure no. 140043

Built
1970
55 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
800
2024 count
Owner
County
County Highway Agency

About this bridge

CR-578A/DARBY RD over Cypress Creek is a concrete culvert carrying CR-578A/DARBY RD over Cypress Creek in Pasco County, Florida. It was built in 1970, so it is 55 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 800 vehicles a day, roughly 9% of them trucks, projected to reach 1,388 by 2044. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCR-578A/DARBY RD
CrossesCypress Creek
Location0.9MI West of I-75
RouteCounty Highway 578A
StateFlorida
Coordinates28.36127, -82.33217
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.5 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length33 ft (10.1 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2024)
Projected traffic1,388 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR-578A/DARBY RD over Cypress Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is CR-578A/DARBY RD over Cypress Creek 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 February 2024.

How much traffic does CR-578A/DARBY RD over Cypress Creek carry?

About 800 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is CR-578A/DARBY RD over Cypress Creek?

The structure is 33 ft (10.1 m) long with a longest span of 11 ft (3.3 m).

Who owns CR-578A/DARBY RD over Cypress Creek?

It is owned by the County Highway Agency.