Portland will begin rolling out signs for a lower, 20 mph neighborhood speed limit Tuesday by installing a new sign in Southeast Portland.

A 20 mph speed limit sign will replace a 25 mph speed sign on 168th Avenue south of Stark Street, according to the Portland Bureau of Transportation. The Portland City Council last month approved a plan to lower speed limits to 20 mph on thousands of miles of city streets.

The new signs will first be put up in east Portland, then in North Portland. Those areas have the city's highest rates of traffic deaths, according to the transportation bureau.

The city expects to replace the signs citywide by April, an effort that's expected to cost $300,000.

Read more about the change by clicking here.

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The Oregon Department of Transportation began conducting nighttime routine inspections of the St. Johns Bridge on Monday. The bridge will be closed to all vehicle traffic 8 p.m. to 5 a.m. daily through Sunday morning.

The bridge will be open to TriMet, emergency vehicles, pedestrians and bicyclists.

Check back throughout the morning for the latest commuting updates and follow us on Twitter: @trafficportland