Monday, April 6, 2015

Changes Being Made To 4th and Maple Traffic Signals

The intersection of 4th & Maple
City of Spokane crews start work tomorrow (Tuesday) morning to revise signal operations at the intersection of 4th Avenue and Maple Street. Changing the eastbound and westbound signal phases to operate independently is expected to resolve some congestion issues at that intersection.

Currently, the eastbound and westbound signal phases operate simultaneously. During peak evening hours, this can cause some traffic backup due to a large amount of eastbound right turns and westbound left turns. Sometimes, this results in traffic on the westbound off ramp at Maple and Walnut backing up onto Interstate 90. From now on, the signal phases will be operated independently at all times to address this issue.

Starting Tuesday, crews will place the signal in flash while they change out the existing overhead three-section signal heads to four-section signal heads. During a ‘green phase,’ a green ball and green arrow will be illuminated so motorists know they no longer have to yield to oncoming traffic when turning.  The City will also post ‘Signal Revision Ahead’ signs for 30 days. 

Work is expected to be completed during the day Tuesday. 


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About SRTC

SRTC is the federally designated Metropolitan Planning Organization (MPO) for Spokane County. Urbanized areas with populations exceeding 50,000 people are required to have an MPO. SRTC was formed to address the county's transportation planning needs. It provides coordination in planning between the public, cities, small towns, the county, the state, transit providers, and tribes.

SRTC offers services including transportation monitoring, transportation modeling, census information analysis, travel demand forecasting, historical traffic count analysis, geographic information systems, and trip generation rates.