Update: March 21, 2017
The Adoption of the Warm Springs Avenue Interim Safety Treatment
Plan, which was scheduled to go before the ACHD Commission tomorrow
evening (Wednesday, March 22), has been temporarily postponed.
We are still working very closely with the geotechnical firm we have
hired to determine a satisfactory interim treatment until a more
permanent solution can be found. We will keep you informed as to
when this item will go before the ACHD Commission.
Update: March 17, 2017
Now that the Mesa's face seems to have stabilized, the ACHD
Commission on Wednesday, March 22, 2017, will consider a recommendation
for interim steps to improve safety and reopen the road. The plan calls
for the removal of loose rock still on the slope as well as previously
fallen stones behind the safety railing. No new boulders have fallen
since Maintenance crews cleared the asphalt on February 22nd.
If the Commission approves moving ahead, a contractor will be hired
to clear the loose material, which will allow for the reopening of the
road upon completion, provided the slope stays stable. ACHD expects to
hear soon from an engineering firm about any longer-term measures to be
considered to improve safety. The Commission meeting starts at 6 p.m. on
Update: February 22, 2017
ACHD crews this afternoon will remove rocks from Warm Springs Avenue
between Starview Drive and Starcrest Drive, a necessary step toward the
possible reopening of the road. Clearing the fallen rocks will allow us
to monitor the area for any fresh boulders. If the hill appears stable
in coming days, the ACHD Commission may be asked to reopen Warm Springs.
Update: February 9, 2017
Starview Drive was reopened today at noon.
Update: February 8, 2017
Today, the ACHD Commission voted to approve an
interim safety treatment so that Starview Drive can be reopened to the
travelling public. Crews will begin to install 100 feet
of new concrete guardrail on the west side of Starview Drive. Additional
temporary signage and lane markers will be installed to alert motorists
to the new lane modifications. It is anticipated that Starview Drive
will be reopened by the close of business tomorrow (Thursday, February
Warm Springs Avenue will remain closed due to
recent fallen rocks; however, the closure has been pushed back to exist
between Starview Drive and Starcrest Drive.
Starview Drive and Warm Springs Avenue have both
been under heavy monitoring since rocks first began falling earlier this
winter after a freeze/thaw/rain cycle prompted more erosion of the
Motorists should be aware that the area on Starview
Drive is still part of an active landslide, and should be watchful and
use caution when navigating this roadway. ACHD staff will continue to
diligently monitor both of these roadways. It is anticipated that, with
the assistance of a local geotechnical firm, ACHD staff will have more
future long-term solutions to present to the Commission by the end of
Update: January 30, 2017
ACHD crews will remove fallen rocks on Starview Drive starting today. The road
will be monitored and if it remains suffiiently boulder-free in coming
days may be considered for at least partial reopening.
Warm Springs Avenue, however, continues to shed numerous stones and
cannot be considered for reopening at this time, ACHD's Engineering and
Maintenance departments concluded on Friday.
A geotechnical firm has been hired to study the situation and provide
options for interim steps and a long-term solution to the long-standing
problem. A report is expected by mid-March.
Numerous large rocks broke loose the week of January 9, 2017 from the Warm Springs
Mesa, forcing the closure of portions of Warm Springs Avenue and East
Starview Drive until the slopes stabilize and the rock fall risk diminished. Rocks continue to fall, as can been seen in the last picture on this page,
taken Wednesday, January 18th.
Warm Springs Avenue is closed from Starcrest Drive to East Parsnip Peak
Drive, and Starview is closed from Warm Springs to South Mill Point Lane.
Residents of the Mesa will still be able to use Starcrest Drive and Windsong
Drive to access the area.
Those needing to travel downtown from east of the Mesa will have to use
Parkcenter Boulevard until further notice.
The rocks are likely falling because of the recent rain and thaw, which has
destabilized the fragile slope where rocks often move in the spring. The
winter’s weather pattern – snow, followed by weeks of subfreezing cold,
followed by rain and higher temperatures – is believed to have touched off a
fresh round of erosion.
In January of 2015, Warm Springs Avenue was closed for two weeks between
Starview and Starcrest after a 50-ton boulder fell onto Warm Springs Avenue.
After a contractor removed a number of teetering rocks, ACHD crews placed
more than 1,200 feet of concrete guard rail along two areas at the foot of
the Mesa to block stones from getting to the road.
Some individuals in recent days have removed barriers to access the
rock slide areas of the closed roads. ACHD asks people to obey the
closures to ensure their own safety, as well as the safety of emergency