June 16, 2008
-
I-35W Bridge over the MississippiJune 16, 2008
Greetings! If you have questions, please do not reply directly to this email. Contact
Amy Barrett, Public Information Officer, at (612) 236-6901 or via e-mail at abarrett@flatironcorp.com.I-35W Bridge Will Be “Snowbound” This WeekSpan 1 of the I-35W Bridge on the south side of the Mississippi (on the left side of the photo above) will undergo a dramatic transformation this week as crews begin painting it “Snowbound” white.Crews spent last week sandblasting the surface of Span 1 and painting a test panel in preparation for this week’s painting. Working from the interior to the exterior, crews will apply two coats of plaster, then spray on a top coat of the “Snowbound” white acrylic paint.The color is one of several elements selected by a group of citizens involved in a community meeting called a design charette last fall. In the meeting, facilitated by FIGG Engineering, the group selected a number of design elements for the bridge, including column shape, bridge color, some aspects of the lighting, the bridge railing style and the type of retaining walls. A Visual Quality Committee–which includes several of the original design charette participants–has continued to meet periodically to advise the contractor on visual elements of the bridge.Construction Update
Other construction activities completed the week of June 9 included:
- Installing pre-cast concrete segments to form the main span of the bridge. Workers will have installed 38 of the 120 total segments by the end of today–32 on the south side (above) and six on the north side. The Lower St. Anthony Falls Lock and Dam has been reopened to boat traffic during the day.
- Completing the final deck pour for Span 3 on the north side of the river.
- Completing the first of three deck pours for the Second Street Bridge.
Construction activities scheduled for the week of June 16 include:- Placing up to six segments a day to extend the main span across the Mississippi. Crews will be placing segments on both sides of the river, working toward the middle, with a closure pour anticipated in early July.
- Pouring the concrete for the webs and soffits (sides and bottoms) of Span 4, which will connect Span 3 with Abutment 5 on the north side of the project.
- Dismantling the casting yard in preparation for breaking up the old roadway so that it can be graded and paved.
- Paving 14th Avenue South.
- Continuing the bridge deck concrete pours for the 2nd Street
Bridge on the north side of the project. - Building cast-in-place retaining walls for the University Avenue
on- and off-ramps. - Grading and other preparation for paving Second Street, the on/off ramps at University Avenue and the stretch of highway from University to Fourth Street Southeast (paving in these areas is scheduled to begin the week of June 23).
Potential Noise and Light Impacts
- Crews will continue the demolition of the old road bed on I-35W on the south side of the river. This work involves the use of equipment to break up the old roadway so it can be rebuilt. As a result, significant thumping noise may occur. This work will take place between 7 a.m. and 9 p.m. and could last until June 23.
- As grading and other “dirt work” activities continue on the south side of the project, backup alarms may be noticeable in that area.
- Crews are working night shifts seven days a week on both sides of the river as well as in the casting yard. Lights may be noticeable between 5:30 p.m. and 4 a.m.
Potential Traffic Impacts
- Crews will periodically close 13th Avenue South from the casting yard entrance to West River Parkway (above) as they transport pre-cast segments to the river. Hauling operations will take place between 7 a.m. and 7 p.m. intermittently until the end of June. The road will close for up to 10 minutes each time a segment is moved.
- Construction traffic will continue in the vicinity of the site. Some of the streets affected include Second Street Southeast (between 11th Avenue Southeast and Sixth Avenue Southeast), First Street South and 19th Avenue South, Bluff Street (between I-35W and 13th Avenue South), and Second Street South (between 13th Avenue South and 11th Avenue South).
Getting a Closer Look
Visit the website - The website offers up-to-date information, presentations, graphics, photos and animations, as well as interesting features on workers on the project. You can access the website at www.mndot.gov.Attend a Sidewalk Superintendent Talk - These weekly events provide an opportunity to accompany project representatives on a walk across the 10th Avenue Bridge, where you can see the construction workers in action and ask questions about the project. If you’d like to participate, meet in the parking lot in front of Grandma’s restaurant at 19th and Washington avenues by 11 a.m. on any Saturday.Take a self-guided tour - Signs describing the design/build process are mounted along the 10th Avenue Bridge.Call the hotline - If you have any questions about the project, please call the hotline at (612) 236-6901 between 7 a.m. and 8 p.m. daily. Messages left after 8 p.m. will be returned first thing the morning of the next business day.Request a presentation - Representatives of Mn/DOT and Flatiron-Manson are willing and eager to provide project updates to neighborhood associations, business associations and other groups. To arrange a presentation, please call the hotline, (612) 236-6901.Other than viewing what’s happening from the 10th Avenue Bridge, the public is asked to stay away from the bridge construction area for safety reasons.The Minnesota Department of Transportation (Mn/DOT) and the Flatiron-Manson construction team intend to build a high quality and safe bridge while minimizing disruptions to the surrounding neighborhoods.We will continue to distribute updates weekly and welcome your comments on how to improve the communication process between the project team and the community.For more information on the I-35W project visit www.mndot.govor call the I-35W Bridge Hotline at (612) 236-6901.