Some of the northern Pinellas' biggest construction projects are nearing completion

Here's an update on some of the biggest public and private construction projects in northern Pinellas.

Keystone Road widening

What: Road becomes four lanes; 3-mile extension of Pinellas Trail

Where: Between U.S. 19 and East Lake Road

Cost: $32 million

Time line: To be completed by summer 2013.

Tarpon Springs parking lot

What: New parking spaces, park benches and public bathrooms on a currently vacant lot. Will connect Tarpon Avenue to a 40-space parking lot on Orange Street.

Where: 143 Tarpon Ave.

Cost: $150,000 for the lot. Other expenses to be determined.

Time line: To be determined

Weaver Park

What: Dunedin is turning 6 acres of open land into Josiah Cephas Weaver Park along the Dunedin waterfront/ Pinellas Trail.

Where: Park will straddle east and west sides of Bayshore Boulevard, just north of Lee Street

Cost: The Trust for Public Land paid $7 million for the property. Dunedin is seeking grants to pay for improvements.

Time line: End of the year or early January

Countryside mall movie theater

What: Cobb Theatres plans 12-screen cineplex.

Where: At Westfield Countryside mall's southwest corner, near Sears, in Clearwater

Cost: Unannounced

Time line: Groundbreaking in early 2011, open in spring 2012

Bayshore stormwater project

What: Safety Harbor is building a 3,500-foot-long berm on the east side of S Bayshore Boulevard to stop stormwater from draining straight into Old Tampa Bay and to prevent ponds on the road.

Where: S Bayshore Boulevard from the Alligator Creek bridge to the city marina

Cost: $3 million

Time line: Begins soon; to be completed in September 2011

U.S. 19

What: A 2.7-mile stretch south of Gulf-to-Bay Boulevard will become mostly elevated.

Where: Overpasses will be added at Belleair Road and Seville Boulevard. The Gulf-to-Bay overpass will be replaced/widened.

Cost: $220 million, including nearly $45 million in federal stimulus funds.

Time line: To be completed in 2014.

Pinellas Trail improvements

What: Widening and enhancing a section through downtown Clearwater, parallel to railroad tracks.

Where: East Avenue between Turner and Drew streets

Cost: $313,000

Time line: Three more weeks of work in September

Scientology's Flag Building

What: Work resumed last year on this enormous building that had sat vacant and unfinished since work stopped in 2003. The Church of Scientology must finish the building's interior.

Where: 215 S Fort Harrison Ave.

Cost: About $40 million so far, and it expects $50 million more.

Time line: To be determined

Downtown Clearwater boat slips

What: 126 boat slips on floating concrete docks, along with a promenade, boardwalk and fishing pier.

Where: 210 Drew St., next to Coachman Park

Cost: $14 million

Time line: It's done. Grand opening celebration at 9 a.m. Thursday.

Largo Community Center

What: Construction is two-thirds complete. The 30,000-square-foot complex will replace a 20,000-square-foot center.

Where: 400 Alternate Keene Road, near the Palms of Largo campus

Cost: $10 million

Time line: Late fall opening