The westernmost of three County Road 578 segments, CR 578 in Hernando County bee lines east 10.82 miles from U.S. 19 (Commercial Way) to U.S. 41 (Broad Street) along the Pasco / Hernando County line. Suburban develop lines most of the route across Spring Hill, with remaining rural sections east toward Masaryktown. CR 578 is four lanes wide from U.S. 19 east to East Road, between Springtime Street and a point just east of CR 587 (Mariner Boulevard), and through the exchange with the Suncoast Parkway (SR 589). Separate projects will expand the remaining two lane sections into a four lane, divided arterial.

The Florida Department of Transportation (FDOT) Project 257298-3-52-01 will expand a 2.7 mile long section of CR 578 from east of East Road to Springtime Street. Right of way costs are $51 million and design costs $2.3 million. Construction is not funded as of 2021.

FDOT Project 257298-4-52-01 completes four lane expansion along CR 578 (County Line Road) from CR 587 (Mariner Boulevard) to SR 589 (Suncoast Parkway. Construction is not funded as of 2021. Right of way costs are $31.8 million and design $2.8 million.

East of the Suncoast Parkway, a $20.2 million construction project is underway through Summer 2022 to construction a new four lane roadway northeast to U.S. 41. Work realigns CR 578 (County Line Road) to meet the new Ayers Road Extension (CR 576), which arcs around Masaryktown to CR 576 on Ayers Road.

A second segment of Hernando County 578 zigzagged east from U.S. 41 at Masaryktown along a combination of Wilson Boulevard, Benes Road, Benes Roush Road and Philips Roads to CR 576 (Ayers Road). The eastern portion of this alignment is unpaved.

The other sections of County Road 578 serve Dade City. The eastern leg follows Lock Street between CR 41 (Blanton Road) and U.S. 98/401. The western portion lines St. Joe Road west from CR 41 (21st Street) to CR 581 (Bellamy Brothers Boulevard) near Darby.

County Road 578 East
Waterfall Drive meanders north from County Line Road to Spring Hill Drive (CR 574) and Lake Theresa ahead of this eastbound shield assembly. 02/15/14
County Road 587 begins at the intersection of County Line Road and Shady Hills Road north from Pasco County. The county road lines Mariner Boulevard north 7.9 miles to SR 50 (Cortez Boulevard). 02/15/14
Hernando County Road 587 doubles as a truck route north through Spring Hill, carrying four lanes along an arterial. 02/15/14
County Road 578 (County Line Road) expands to four lanes for the second time ahead of both County Road 585 (Anderson Snow Road) north and the Suncoast Parkway. CR 585 stems north from CR 578, 7.09 miles to SR 50. 02/15/14
A short distance east of CR 585 is a diamond interchange joining County Line Road with SR 589. 02/15/14
East from the Suncoast Parkway, County Line Road quickly reduces back to a two lane rural highway to Masaryktown. 02/15/14
County Road 578 West
The first confirming marker for CR 578 stands along County Line Road west of U.S. 41 at Masaryktown. 11/18/15
County Line Road expands to four lanes from Trillium Boulevard west through a diamond interchange with SR 589 (Suncoast Parkway). The extension of CR 576 ties into CR 578 here. 11/18/15
The Suncoast Parkway heads 7.2 miles north from CR 578 to SR 50 west of Brooksville. 11/18/15
Traveling south from County Line Road, the Suncoast Parkway enters a semi-rural swath of northern Pasco County to SR 52. 02/09/14
Suncoast Parkway south ends by Tampa International Airport (TPA) in 37 miles. 02/15/14
Continuing west, County Road 578 (County Line Road) approaches a new retail area at Anderson Snow Road. A trailblazer here reflects Bayfront Health Spring Hill hospital, 3.5 miles to the west. 02/15/14
County Road 585 (Anderson Snow Road) parallels the Suncoast Parkway northward 7.09 miles to SR 50 (Cortez Boulevard) through eastern reaches of Spring Hill. 02/15/14
County Line Road tapers back down to two lanes west from the Shoppes at Avalon and CR 585 south end. 02/15/14
A reassurance shield for CR 578 west appears after Sparks Road. 02/15/14
Beyond the aforementioned hospital, County Line Road approaches Shady Hills Road south and Mariner Boulevard north. The intersection represents the south end of County Road 587, a 7.9-mile route north to SR 50. 02/15/14
Mariner Boulevard (Hernando County Road 587) represents the main north-south arterial through Spring Hill. The four lane roadway varies between commercial frontage and stretches where residential driveways tie in. 02/15/14
County Line Road narrows again west from County Road 587 through an area lined with industrial parks and nurseries. 02/15/14
Traveling west from Waterfall Drive north into Spring Hill and Winding Oaks Boulevard south, drivers see this reassurance marker. 02/15/14
Cobblestone Drive extends north from East Road and County Road 578 to link County Line Road with Spring Hill Drive (SR 574), the main east-west arterial through Spring Hill. 02/15/14
A traffic light operates along CR 578 west at Dartmouth Avenue north and Grand Club Drive south. County Line Road expanded to urban arterial standards ahead of Cobblestone Drive. 02/15/14
County Road 578 ends at U.S. 19 (Commercial Way), east of Travel Park Drive. U.S. 19 enters Hernando County from Port Richey and Hudson in Pasco County. 02/15/14
U.S. 19 angles northeast from County Line Road along the west side of Spring Hill to the city of Weeki Wachee. Known as Commercial Way, the four lane divided highway sees a number of shopping centers to SR 50 (Cortez Boulevard). 02/15/14

Photo Credits:

02/09/14, 02/15/14, 11/18/15 by AARoads

Connect with:
U.S. 19
U.S. 41
State Road 589 - Veterans Expwy / Suncoast Pkwy
Hernando County Road 585
Hernando County Road 587 - Mariner Boulevard

Page Updated 03-13-2021.

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