Crews build a steel reinforcement bar cage inside the rebar jig at the on-site casting yard near the Hwy 36/95 interchange. Rebar acts like a skeleton in each segment. At this casting yard, crews will cast the 330 segments that will make up the bridge approach spans driving surface.
Crews use a segment lifter at the on-site casting yard near the Hwy 36/95 interchange to transport finished segments to a nearby storage area. Here, the concrete continues to age and strengthen. The segment lifter can lift up to 100 tons.
A photo of Pier 5E (far right). On the left, falsework goes up for one of the cast-in-place sections of the bridge approach spans. This particular falsework will span from Pier 5 to Pier 7, which will connect Hwy 36 to the river bridge.
A look at the falsework coming together for the cast-in-place sections of the eastbound ramp from Hwy 95 to the river bridge. Crews will place steel rebar then pour wet concrete inside these temporary forms. Other parts of the bridge deck will be made up of pre-cast segments.
Crews move dirt for the St. Croix Crossing east bridge abutment in Wisc. Work on the Wisc. bluff to construct the abutment and Pier 13 will continue through the winter.
Photo of Wisc. grading work progress, taken Oct. 6.
A look at the intricate web of reinforcement bar in the Pier 8 crossbeam. Photo taken in August.
The second of three concrete pours for the Pier 8 crossbeam occurred on Sept. 30.
Crews completed the removal of the Xcel barge unloader facility wheel in mid-Sept. as part of the project’s mitigation package. The removal of the entire main structure was completed in October.
Crews poured concrete on Oct. 16 for curb and gutter for the stretch of the S. Frontage Road from Osgood Ave. to Olene Ave. All S. Frontage Road construction is anticipated to be complete by the end of Oct.
Pier 9 columns under construction in late May. Here, crews are constructing the second of four sections to the crossbeam, which connects the upstream and downstream pier columns.
Forms go up on Pier 10 in the St. Croix River. Photo taken in late May.
A view of river Piers 9-12, taken Aug. 14, 2014.
Crossbeam work at Pier 8 began in late June. There is approximately 478,000 pounds of reinforcement bar in each crossbeam, and all of it is tied by hand!
A MnDOT inspector took this spectacular photo of the Pier 12 platform. The platform supports crossbeam construction, which connects the upstream and downstream pier columns at each river pier location.
An aerial view of the project site in late August 2014. Photo courtesy of Mike Demulling with the New Richmond Regional Airport.
Crews began setting up the on-site casting yard near the Hwy 36/95 interchange in mid-summer. Here, 330 segments will be cast that will make up the driving surface of the bridge approach spans.
A photo of the newly-completed WIS 35 overpass. The new overpass opened to traffic on July 1. Aerial photo courtesy of Mike Demulling with the New Richmond Regional Airport.
Grading work for the new WIS 64 occurred throughout 2014.
Crews pave the South Frontage Road east of Osgood Avenue off of Hwy 36. South Frontage Road reconstruction is one construction phase of the collective Hwy 36 project work in 2014.
Of the five pier locations in the St. Croix River, Pier 8 construction was furthest along in Spring 2014 because crews were able to access the pier via a temporary causeway from the Minnesota shoreline. Here, crews are constructing the second of three sections to the crossbeam of the Pier 8 columns.
Crews installing reinforcement bar in one of two pier columns at Pier 8, closest to the Minnesota shoreline.
A view of the upper column under construction on Pier 8 in the St. Croix River.
Work begins on the upstream Pier 9 column. The yellow form is used to shape the pier as crews pour concrete.
The columns at Pier 9 start to rise out of the water, while Piers 10-12 can be seen in the background. Photo taken in mid-May 2014.
A photo of Pier 3W on Minnesota land. Crews install reinforcement bar for the bottom portion of the pier column.
Another photo of Pier 3W on Minnesota land. Here, crews place the column form and install reinforcement bar for the pier column.
Grading near WIS 35 to construct the new WIS 64 road and County Road E interchange near Houlton.
A photo of early construction of the new WIS 35 overpass. The new St. Croix Crossing will carry motorists over the river and under WIS 35 to connect with the new WIS 64.
Crews pour the south abutment for the new WIS 35 overpass.
Crews removed the asphalt down to a dirt base as part of the Hwy 36 westbound lanes road reconstruction from Osgood Avenue to just east of the Washington/Norrell intersection. This work was part of the first construction phase in 2014.
In order to complete construction of the pier foundations in December, a tug boat continuously broke ice on the river within the project limits.
Crews prepare to pour a pier column.
Another view of crews constructing the pier foundations in winter 2013.
Crews working inside a cofferdam in winter 2013.
A landscape view of the pier foundations construction wrapping up at the end of 2013. The tops of the completed pier foundations can be seen just above the water line.
The completed pier foundations of Piers 8-12 on the St. Croix River.
Crews completed much of the pile driving for the piers on Minnesota land during the winter months while windows were closed.
Piling is driven into the ground for Pier 6E on Minnesota land.
Crews tying reinforcement bar for the Pier 3E footing on Minnesota land.
In February 2014, crews constructed a causeway out to Pier 8 in order to continue construction through the winter. A causeway is a structure built above the water level to act as a working platform, allowing construction materials, crew members and their vehicles to easily move back and forth between the shoreline and the pier.
Another photo of the man-made causeway from the Minnesota shoreline out to Pier 8.
Buckets of concrete get transported onto a barge and out to the construction site.
Crews inspect the reinforcement bar before pouring the concrete footing for one of the pier foundations.
Crews place reinforcement bar for a pier foundation column inside the dry cofferdam.
A crew member paints a pier column from within the dry cofferdam.
A newly-paved Hwy 36 looking east. This will be the permanent connection to Hwy 95.
A view of the new Beach Road bridge following its opening to traffic.
Early construction of the new Beach Road bridge.
A view of Beach Road bridge construction progress from the south abutment.
Construction of the new St. Croix Crossing pier foundations on the St. Croix River in 2013.
Nine-foot diameter casings eventually go through 25 feet of water and up to 85 feet of muck to get to bedrock.
Crews drill out muck on the St. Croix River from one of the steel casings.
A drill unloads muck from the river bottom removed from a casing onto a barge.
Crews lift a 90-foot long steel reinforcement bar cage to be placed inside the 9-foot diameter steel casing.
An overview look at the work platform and four steel casings. The work platform eventually was sunk to the bottom of the river for the base of the footing.
Local, state and federal elected officials from Minnesota and Wisconsin participate in the
St. Croix Crossing groundbreaking in May 2013.
MnDOT and WisDOT project staff participate in the St. Croix Crossing groundbreaking in May 2013.
Proposed views of river crossing - preconstruction
Aerial view looking west toward Xcel King power plant.
View looking southeast from historic Scenic Overlook.
Aerial view looking west toward Sunnyside Marina.
View looking south from Lowell Park.
View from the river looking upstream toward Stillwater.
St. Croix Crossing Animations
St. Croix Crossing Project
Watch an animation that describes the St. Croix Crossing project from aerial, land and water perspectives. The video tours various areas of the project from Hwy 36/Hwy 95 improvements to the new river crossing to completing a new four-lane WIS 64. All work is anticipated to be complete in fall 2016.
Loop Trail On Bridge
Watch an animation of the bicycle/pedestrian walkway across the new St. Croix Crossing, opening to traffic in fall 2016.
View From Boat
Watch a clip of the new river bridge from the perspective of a watercraft traveling the St. Croix River.
Bird's Eye View
From a bird’s eye view, see the new river bridge connecting Oak Park Heights, Minn., to Houlton, Wisc., opening to traffic in fall 2016.
St. Croix Crossing Segment Placement Process
Watch the sequence for placing pre-cast segments for the new river bridge.
Pier 8 Construction Time Lapse
Check out the great progress we’ve made out on the St. Croix River from July 2013 through July 2014. Watch Pier 8 rise out of the river over the past year and through the seasons.