Traffic Alerts

(See map below)
Updated 10/11/19

1.  Atlas 236 – 55th Avenue W and 236th Street SW

Expect lane shifts on 56th Avenue W and 236th St SW.  Sidewalk will be closed on eastside of 56th Ave. W between 236th St. SW and 235th St. SW during the day.  Also expect lane delays on 55th Ave. W.

2.  Main Street Revitalization – 236th Street SW and 58th Avenue W

The Main Street Revitalization Project on 236th Street SW and 56th Avenue W base layer paving will be complete by Monday. Striping crews will be out on Monday to lay out lane marking along 236th St. SW.  All lanes at the intersection will be open by end of day Monday.

In addition, the signal operations should return to normal late Monday and will significantly reduce delays currently experienced at the intersection.

For the early part on Monday, detours may still be in effect.  Traffic will be detoured onto 58th Ave. W and 54th Ave. W for traffic on 236th St. SW; traffic will be detoured onto 237th St. SW and 235th St. SW for traffic travelling on 56th Ave. W.  Alternate travel routes are strongly advised. Drivers should expect significant traffic delays during construction.

Businesses near this intersection will remain accessible and we encourage the community to continue to visit them during this time.

The top-most asphalt layer will be paved when warmer spring weather arrives. Work by the city’s contractor and utility companies is expected to continue throughout the fall and winter along roadway shoulders and not impact traffic.

3.  Sound Transit

WSDOT’s I‑5 Right-of-Way:  Tree removal and preliminary grading activity are ongoing. Lane shifts and reductions in the number of I‑5 travel lanes are scheduled during overnight periods. Overnight closures of the on and off-ramps at 220th St SW are possible throughout this week, including both weekend and weekday nights.

Private Parcels:  Some demolition work of single family properties throughout Mountlake Terrace is ongoing with related minor material and equipment hauling occurring. Onsite site construction at the former Roger’s Market site continues.

City Roadways:  Temporary lane shifts may be encountered near Sound Transit activities at single family home demolition and the former Roger’s Market site.

Map Showing Main Street Detour_236th St SW