The roundabouts also will be safer for drivers coming off the interstate, PennDOT officials said in announcing construction plans last spring. "Roundabouts don't have as many safety issues as turn lanes," Nunez said. The roundabouts are designed to improve safety at the interchange. The roundabouts at each end eliminate the need for left-turn lanes onto the interstate. The new bridge is narrower than the former Route 18 bridge with just two lanes, one northbound and one southbound. You need it to have a certain amount of strength before you can move on to the next step," Murcavage said. "We did everything we could to speed up the process, but it takes time for concrete to cure. PennDOT's road work season: Construction in Erie County will cause some delaysĬonstruction was expedited as much as possible, but there are some processes that just can't be rushed, Murcavage said. "It was typically done at night so we didn't have a huge queue of backed-up traffic."Ī crash truck is a slow-moving truck carrying a lighted message sign that signals traffic to slow down and stop behind it. Once the contractor set the beam over the lane and got it secured, we let the traffic go, and did that over and over again until we got all the beams set," Nunez said. "We did 15-minute rolling closures after a crash truck slowed and stopped traffic on the interstate. Interstate lanes were mostly closed in 15-minute intervals at night, when traffic is lightest, said Nate Nunez, PennDOT assistant district executive for construction in northwestern Pennsylvania.
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