To create space for a widened SR 522 roadway, we have to remove 300,000 cubic yards of rock along the westbound lanes. We will blast the rock using explosives and then haul it away from the site. SR 522 will be closed during blasting and drivers will be detoured around the site. Download a flyer (pdf 728 kb) about our rock blasting work (pdf 1 mb) or watch a video (YouTube).
Each blasting operation will take about an hour from start to finish and must be done during daylight hours. To keep drivers safe we will fully close the roadway in both directions during the blasting work. Closures are currently scheduled for every Tuesday and Thursday from 10:15 to 11:15 a.m. We expect to use 150 closures to complete the rock-blasting work.
Drivers can choose an alternate route or follow a signed detour using SR 9 and US 2 around the closure. The detour will add 10 miles and 20 minutes to trips, depending on destination and traffic. We will use electronic signs and highway advisory radio to alert drivers to the closures. We'll also provide advance notice to emergency responders.