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Building the foundation of North Main Street's new bridge

Posted March 16, 2018

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V-Pier Bridge design
Signature bridges over the future bypass channel are being built now and will allow traffic to enter Panther Island from the north and west.

The recent soggy weather hasn’t dampened progress much on the North Main Street bridge.

Construction on the Trinity River Vision Authority’s third signature V-pier bridge began in late December with traffic detours on North Main Street near Coyote Drive-In and LaGrave Field. The bridge is being built on dry land and will serve as a connector across the new bypass channel. Design of the north end of the bypass channel was approved in December.

Steps in V-pier structure construction

Step 1: Pier shaft construction. This initial step requires drilling approximately 30 feet into the ground to create a strong foundation to support the future bridge structure. Once the pier shafts are drilled, a circular steel cage is inserted in the drilled hole and concrete is poured to reinforce the bridge’s foundation. This bridge will have four pier shafts, each 10 feet in diameter, below ground. Work began on the pier shafts in December and they were completed in early February.

Step 2: Pier column construction. The pier columns are constructed by encasing circular steel reinforcement in high-strength concrete, which connects to the underground pier shafts. The upper part of the pier columns has a round dome that will be visible above the waterline. The four pier columns are underway now; the first two were poured the second week of March.

Step 3: V-pier construction. Once the pier shafts and columns are complete, the bridge’s four signature V-piers will support the bridge’s superstructure, or deck, for vehicle and pedestrian traffic. The North Main bridge will have four V-piers that will consist of approximately 210 cubic yards of steel-reinforced high-strength concrete.

Why a V shape?

The signature bridges get their name from the V-shape of the support pier that will be visible above the water. But there’s more beneath the surface.

The V-shape is an alliance of art and architecture. World-renowned architect Miguel Rosales designed the V-pier structure with Freese and Nichols Inc. of Fort Worth. Aesthetically, the design mirrors structures in Fort Worth’s Cultural District, like the Modern Art Museum. Practically, the V-pier design provides better bridge support with fewer piers. Fewer piers mean less concrete and fewer obstructed views from the river.

Ultimately, the V-piers will support the superstructure of the bridge, which will connect traffic from one side of the bypass channel to the other.

The Panther Island project, which includes three signature bridges positioned along the to-be-realigned Trinity River, are a collaborative effort between the Trinity River Vision Authority, TxDOT, City of Fort Worth, North Central Texas Council of Governments, U.S. Army Corps of Engineers and Tarrant County.

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Historic and Cultural Landmarks Commission Work Session: 12:30 p.m. Nov. 12, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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Historic and Cultural Landmarks Commission Public Hearing: 2 p.m. Nov. 12, 2018; City Council Chambers, Second Floor, City Hall, 200 Texas Street.
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Trinity Metro Commuter Rail Committee: 3:30 p.m. Nov. 12, 2018; Intermodal Transportation Center, Second Floor Community Room, 1001 Jones Street.
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Trinity Metro Finance & Audit Committee: 4:30 p.m. Nov. 12, 2018; Intermodal Transportation Center, Second Floor Community Room, 1001 Jones Street.
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Ad Hoc Municipal Court Advisory Committee: 11 a.m. Nov. 13, 2018; City Manager Conference Room 380, Second Floor, City hall, 200 Texas Street.
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Legislative and Intergovernmental Affairs Committee: 1:30 p.m. Nov. 13, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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Fort Worth Crime Control and Prevention District Board of Directors Quarterly Meeting: 2:30 p.m. Nov. 13, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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City Council Work Session: 3 p.m. Nov. 13, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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Global Entrepreneurship Week - TechNest: 4:30 p.m. Nov. 13, 2018; TechFW at the Fort Worth Business Assistance Center, 1120 South Freeway.
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North Central Texas Council of Governments (NCTCOG) Transportation Public Meeting: 6 p.m. Nov. 13, 2018; North Central Texas Council of Governments, 616 Six Flags Drive, Arlington.
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Civil Service Commission: 6 p.m. Nov. 13, 2018; City Hall Annex, Sixth Floor, Training Room #623, 908 Monroe Street.
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Global Entrepreneurship Week - Female Founders of Dallas Final Pitch Competition: 6:30 p.m. Nov. 13, 2018; Fort Startup (IDEA Works) at the Business Assistance Center, 1150 South Freeway.
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City Council Meeting: 7 p.m. Nov. 13, 2018; Council Chambers, Second Floor, City Hall, 200 Texas Street.
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Global Entrepreneurship Week - 1 Million Cups: 9 a.m. Nov. 14, 2018; Locavore, 715 Hawthorne Avenue.

Zoning Commission Work Session: 11:30 a.m. Nov. 14, 2018; City Hall, Second Floor, Council Conference Room 290, 200 Texas Street.
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How to Buy and Sell a Business: 11:30 a.m. Nov. 14, 2018; SCORE Conference Room, Fort Worth Business Assistance Center, 1150 South Freeway.
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Zoning Commission Public Hearing: 1 p.m. Nov. 14, 2018; City Hall, Second Floor, Council Chambers, 200 Texas Street.
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Tax Incremement Zone Number Three Board of Directors Meeting : 2 p.m. Nov. 14, 2018; Idea Works, Second Floor Conference Room, 600 Rosedale.
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Park & Recreation Advisory Board: 4 p.m. Nov. 14, 2018; Deborah Beggs Moncrief Garden Center, Fort Worth Botanic Garden, 3220 Botanic Garden Boulevard.
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Global Entrepreneurship Week - The Power of WE - Women Entrepreneurs: 6 p.m. Nov. 14, 2018; The Women's Club of Fort Worth, 1316 Pennsylvania Ave.
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Thanksgiving Dinner at Sycamore: 6 p.m. Nov. 14, 2018; Sycamore Community Center, 2525 E. Rosedale St.

Community Development Council: 6:15 p.m. Nov. 14, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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Global Entrepreneurship Week - Breakfast at the BAC - Winning at Business Planning: 7:30 a.m. Nov. 15, 2018; Fort Worth Business Assistance Center, 1150 South Freeway.

Fort Worth Professional Firefighters Association: 9 a.m. Nov. 15, 2018; IAFF Local 440 Office, 3855 Tulsa Way.
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"As One" Public Art Dedication at Bob Bolen Public Safety Complex: 10 a.m. Nov. 15, 2018; Bob Bolen Public Safety Complex, 505 W. Felix St.

Urban Design Commission Public Hearing: 10 a.m. Nov. 15, 2018; City Council Conference Room 290, Second Floor, City Hall, 200 Texas Street.
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Fort Worth Housing Solutions 80th Anniversary Celebration Notice of Possible Quorum: 10 a.m. Nov. 15, 2018; Alton Park, 5712 Azle Avenue.
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Thanksgiving Luncheon at MLK Jr. Community Center: 11 a.m. Nov. 15, 2018; MLK Jr. Community Center, 5565 Truman Drive.

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Thanksgiving Luncheon at Highland Hills: 11 a.m. Nov. 15, 2018; Highland Hills Community Center, 1600 Glasgow Rd..

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Workforce Delivery Systems Committee Meeting: noon Nov. 15, 2018; Board Large Conference Room, 1320 S. University Drive Suite 600.
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Global Entrepreneurship Week - Be Your Own Boss Entrepreneurship Panel: 12:15 p.m. Nov. 15, 2018; TCC Northwest Campus, 4801 Marine Creek Parkway.

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Global Entrepreneurship Week - EpICMavs: 4:30 p.m. Nov. 15, 2018; UTA Startup Lounge, Campus Center, 505 West Nedderman Drive.

Thanksgiving Dinner at Diamond Hill: 5 p.m. Nov. 15, 2018; Diamond Hill Community Center, 1701 NE 36th St.

Fort Worth Housing Solutions : 5 p.m. Nov. 15, 2018; FWHS Administrative Office Board Room, 1201 East 13th Street.
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Responsible Pet Ownership Class: 6 p.m. Nov. 15, 2018; Chuck Silcox Animal Care & Adoption Center, 4900 Martin Street.

Thanksgiving Dinner at Victory Forest: 6 p.m. Nov. 15, 2018; Victory Forest Community Center, 3427 Hemphill St.

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Tarrant County Vendor Fair: 8 a.m. Nov. 16, 2018; Tarrant County Resource Connection Gymnasium, 2300 Circle Drive.
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Commercial Board of Adjustment Work Session: 9 a.m. Nov. 16, 2018; City Hall, Second Floor, Council Conference Room 290, 200 Texas Street.
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Business Planning with StratPad Tools: 9 a.m. Nov. 16, 2018; SCORE Conference Room, Fort Worth Business Assistance Center, 1150 South Freeway.
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Public Art Dedication: 9 a.m. Nov. 16, 2018; East Division Police Station, 5650 E. Lancaster Ave.

Commercial Board of Adjustment Public Hearing: 10 a.m. Nov. 16, 2018; City Hall, Second Floor, Council Chambers, 200 Texas Street.
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Building Out a Successful Sales Program: 11:30 a.m. Nov. 16, 2018; SCORE Conference Room, Fort Worth Business Assistance Center, 1150 South Freeway.
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Residential Board of Adjustment Work Session: noon Nov. 16, 2018; City Hall, Second Floor, Council Conference Room 290, 200 Texas Street.
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Residential Board of Adjustment Public Hearing: 1 p.m. Nov. 16, 2018; City Hall, Second Floor, Council Chambers, 200 Texas Street.
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Turkey Bingo: 6 p.m. Nov. 16, 2018; Sycamore Community Center, 2525 East Rosedale St.

Turkey Bingo at North Tri-Ethnic: 6 p.m. Nov. 16, 2018; North Tri-Ethnic Community Center, 2950 Roosevelt Ave.

Thanksgiving Dinner at Fire Station Community Center: 6 p.m. Nov. 16, 2018; Fire Station Community Center, 1601 Lipscomb St.

Turkey Bingo at Andrew Doc Session: 6 p.m. Nov. 16, 2018; Andrew Doc Session Community Center, 201 S. Sylvania Ave.

Responsible Pet Ownership Class (Spanish): 9 a.m. Nov. 17, 2018; Chuck Silcox Animal Care & Adoption Center, 4900 Martin St.

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