The first bridge at this location was built in 1887. A new bridge was built
in 1905 featuring 5 steel truss spans. That bridge carried traffic for 51
years until it was deemed to be unsound. The truss spans were replaced in
1958 with 5 new steel trusses, this time, built much heavier. The new
trusses were also wider to allow 4 lanes of traffic. In addition, the
1905 era bridge piers were widened, reinforced, and built 20 feet taller
to allow river navigation under the bridge in anticpiation of barge traffic
on this section of the river with the completion of the locks at Saint
Anthony Falls in the 1960s.
The 1958 era structure was demolished in the summer of 2009. This page
features the 1958 era Lowry Avenue Bridge, the events leading to its closing,
and photos from the demolition and removal of the bridge.
Until recently, the Lowry Avenue Bridge was hard to photograph. The
west end is sandwiched between two industrial complexes, while the east
end has a bunch of trees in the way. The City of Minneapolis started
developing a riverside park in 2006 just south of the east entrance
to the bridge. That provided a clearing to shoot the photo above.
The park was completed in 2008, and features an overlook that has a very
nice view of the Lowry Avenue Bridge.
The bridge was closed for a while in 2005 for painting. While doing
the paint work, engineers found that one of the piers had shifted 11
inches. In fact, one segment of the bridge was potentially in danger
of falling in the river. Divers were sent down to investigate the pier.
The conclusion is that they don't know why it shifted, but they think
that it is again stable and will not move any further. A new set of
bearings had to be manufactured and installed to make the suspect span
safe again.
Between the pier problem and near constant repairs needed on the steel
grate deck, MN-DOT wants to replace the bridge. So does the City of
Minneapolis. The proposal now is to build a signature span using the
cable stayed design. The bridge would be the anchor and focal point
for a new urban redevelopment project on the west side of the river.
The cable stayed bridge would cost in the $35-million range. The
legislature has proposed $23 million during the 2007 session, but the
state Governor is opposed to any spending for this project.
Update—after an especially warm spring day, MN-DOT inspectors
discovered that one set of bridge bearings had once again reached its
stop bracket. The stop bracket limits how far the bearing can slide,
and it prevents the bridge from sliding off of the pier and falling
into the water. Once the span hit the stop bracket, forces from the
heating and cooling of the span apparently pushed the problem pier
two inches further out of plumb. It also caused some bolts on the
structure to shear off. As a result, MN-DOT closed the bridge at 10AM
on Friday, April 25, 2008.
The 2008 legislative session pushed though a highway bonding bill.
The Lowry Avenue Bridge replacement is one of the high priority projects.
The bridge is expected to be started in 2009 and be completed by the
end of 2010. The plan is to install a signature span. Finalists
include a towering arch design, a single tower cable stayed bridge,
and a more routine concrete box bridge.
The photo above was taken in late September, 2008, after the bridge had
been closed about 6 months, from the new riverside park just south of
the bridge. The photo below is a closer view of the main navigation
channel.
Update—the Lowry Bridge demolition project headed to court in late
2008 and early 2009. One group challenged the project stating that the
existing bridge could be fixed for $10-million, a savings of over $70-million
to the taxpayers compared to the cost of a new bridge. Another group
argued that the bridge could not be removed because of its historic status.
The court ruled that while the bridge was located in a historic district,
the bridge itself is not designated as a historic structure. MN-DOT
announced on June 10, 2009, that the bridge would be brought down in a
controlled demolition on or about June 21.
Update—the Lowry Bridge was dropped into the Mississippi River on
Sunday, June 21, 2009, at 9:08 AM using 198 pounds of explosives. It is
expected to take just 24 hours to clear the river navigation channel.
The photo above was taken from along the east bank of the Mississippi
River. This close view of the main span shows the details of the piers.
To reinforce the piers, sheet pile was installed into the river bed.
Concrete was poured into area enclosed by the sheet pile, creating a
much larger and stronger base for the piers. The photo below is a view
of the entire bridge from the same location.
These two photos are views of the bridge portal on the east end of the
structure. MN-DOT has the bridge blocked with barricades and K-blocks.
Even the sidewalk is closed off. Minneapolis city police have issued
tickets to people who attempt to cross the bridge.
The photo above is a view looking west down the closed sidewalk. The
sidewalks on the Lowry Avenue Bridge are interesting in that they are on the
outside of the truss structure rather than inside the truss. The photo
below is looking west through the truss at the traffic lanes. This is
the only remaining steel deck bridge over a major river in the twin cities.
The photo above is a detail view of the first truss span. The bridge was
painted just prior to being closed. The photo below is a view looking down
the sidewalk on the north side of the bridge.
The photo above is one last look at the east portal of the Lowry Avenue
Bridge. The previous 10 photos were taken in September, 2006, after the
Lowry Avenue Bridge had been closed for 6 months.
The next seven photos were taken prior the bridge being closed. The photo
below was taken from the location of a future riverside park. Trees
obscure the eastern-most bridge truss.
The photo above is a view of the east bridge portal. Note the lone
vehicle on the bridge. The photo below is a view of the bridge span
over the navigation channel.
The photo above is a view of the Lowry Avenue Bridge from a bit further
downstream. This view shows some of the other riverside structures near
the bridge. The photo below shows the west end of the bridge after it
was closed down in the spring of 2008.
The photo above is the west end bridge approach. The river crossing
climbs to the top of a roof level earthen causeway that runs several
blocks before reaching the truss spans. The photo below is a bridge
over a pair of railroad tracks on the west side of the river.
These two photos are from Saturday, June 20, 2009, the last full day of life
for the Lowry Bridge. The photo above is from the riverside park located
just south of the bridge on the east side of the Mississippi River. The
photo below is from near the east portal of the structure. Note that the
bridge railings have been removed.
These two photos are more views from the last full day of life for the
Lowry Bridge. In the photo above, we see that the bridge deck has been
removed. The photo below is a view of the activity on the east end of
the structure.
The photo above is the Lowry Avenue Bridge on Sunday, June 21, 2009, about
an hour after it was dropped into the Mississippi River using explosive
charges. The photo below is a close view of one of the mid-river spans.
The photo above is the Lowry Avenue river crossing on June 28, 2009, after the
bridge steel has been removed from the river. The photo below is the
navigation channel. The white markers have appeared since the bridge was
removed. They mark the path through the ruins given that the signs and lights
formerly mounted on the bridge structure are now gone.