Good morning, commuters!
The Wednesday drive is off to a good start with no major issues on the roads.
The remanants of an earlier crash remain on northbound I-35 at 210th Street in Lakeville where a vehicle is sitting off on the right shoulder. That's not causing any delays.
A motorist is changing a tire on northbound Hwy. 169 on the Bloomington Ferry Bridge, so look out for that as you cross the Minnesota River.
I’ll be keeping an eye on the roads and rails this morning, reporting any delays or issues — and I will need your help.
If you see or hear about any congestion, delays or problems, e-mail drive@startribune or tweet @stribdrive.
With hydraulic jacks providing the oomph and "concrete shoes" with Teflon pads underneath to give it glide, MnDOT crews will push the new Larpenteur Avenue bridge over I-35E in to place during the overnight hours Wednesday into Thursday.
MnDOT will close both directions of I-35E between I-94 and Hwy. 36 from 9 p.m. Wednesday to 5 a.m. from Thursday when it uses a technique called Slide in Bridge Construction (SIBC), something that has used in a handful of other states and is being tried in Minnesota for the first time.
"It's pretty cool," said spokeswoman Bobbie Dahlke, but it's definitely not fast. It will take up to eight hours to move the 3.5 million-pound deck and beams from a temporary structure nearby where it was built onto the newly constructed new piers and abutments.
MnDOT will use hydraulic jacks that will push the deck laterally at the slow and methodical rate of 19 inches per stroke to cover the distance of 84 feet.
Motorists might experience brief closures of up to 15 minutes at time overnight Tuesday into Wednesday as MnDOT gets ready for the big move. On Wednesday, lane restrictions in the vicinity of Larpenteur Avenue will begin at 7 p.m. and a number of ramps will shut down at 8 p.m. They include ramps to and from I-35E at Maryland Avenue, Wheelock Pkwy., Roselawn Avenue and Hwy. 36. Motorists will be detoured on I-694 and I-94 to bypass the closure.
MnDOT built the deck for the new Larpenteur bridge on temporary framework to the north of the previous bridge. That allowed the agency to keep Larpenteur over I-35E open to traffic longer and minimize the length of traffic disruptions. The estimated timeframe from closure of the old bridge to opening of the new one is estimated at 35 days, compared to 60 days for bridges of similar size recently built at Arlington Avenue and Wheelock Pkwy., MnDOT said.
SIBC, also known accelerated bridge construction, is among the latest innovations states are employing at the suggestion of the Federal Highway Administration, which through its Every Day Counts program, urges states to use new technologies to shorten project delivery, enhance highway safety and mitigate environmental impacts.
SIBC has been tried in Oregon, Utah, Missouri, Colorado and Massachusetts, and other states are now looking at using the method.
SIBC, which allows bridges to be moved laterally only, is different than the methods used on the recently-built bridges at Arlington Avenue and Wheelock Pkwy. In those cases, the bridges were built off site and moved into place through a process called Self Propelled Modular Transporter (SPMT). That process uses a vehicle that jacks up the beams and deck from its staging area and moves the superstructure laterally, vertically and even in a circle if necessary. The parts can be moved hundreds of miles if surface conditions allow for it. MnDOT also used SPMT when building the new Hastings Hwy. 61 bridge. That bridge was built on land, then loaded onto a barge and floated down the Mississippi River and lifted into place.
The new Larpenteur bridge consists of two spans, each 92 feet. If you don't want to stay up all night to watch the progress, MnDOT says it hopes to capture the event on video and share it on social media sites.
The new bridge is just part of the ongoing work along I-35E, which will continue through 2015. The project includes adding a new MnPASS lane to the current three lanes between Little Canada Road and Maryland Avenue, rebuilding bridges along that stretch and resurfacing the freeway. Work also continues on rebuilding I-35E between the Maryland Avenue and University Avenue.
The International Shriners definitely know how to have fun, and they will do that on Tuesday evening when they hold a parade in downtown Minneapolis.
More than 15,000 members of the Imperial Session of the Shriners International are in town for their annual business meeting. This evening, they'll clown around in their vibrant costumes, play an array of musical instruments and race miniature cars down Hennepin Avenue.
The parade steps off at 7:30 p.m. It begins at Loring Park and follows Hennepin Avenue to 5th Street. That, of course, means traffic disruptions and detours for Metro Transit routes.
Here is what will be closed:
Beginning at 7 p.m. and lasting until about 10:30 p.m., Hennepin Avenue will close from Dunwoody Boulevard/Lyndale Avenue to Washington Avenue. During this time, a number of cross streets will also be closed, although traffic will be able to cross Hennepin Avenue at 4th, 5th, 10th, 11th, and Maple Street/16th Street.
Metro Transit says the following routes will be on detour in downtown Minneapolis starting at 7:15 p.m. Tuesday: 3, 4, 5, 6, 7, 9, 12, 14, 18, 19, 22, 61 and 675. Here are the details along with a parade route map.
Map courtesy of Shriners International