. >> happening today, a majec road pr that could impact drivers in northern virginia.construction begins on the final phase of the converting crystal drive into a two-way street. right now the road between 26th 27th street south goes only one way. the traffic will add new traffic signals and upgrades to crosswalk markings and expect lane closures throughout the week. she construction is expected to last until t fall. >> paying to get around traffic, it's become a very real thing here in our area as those express lane networks expand. now in a bold move from maryland, the lanes could be coming to a major lane like i-270. but as can you imagine there are a lot of questions.or we have from chopper 4. >> reporter: whe story like this, the best way to describe it is to go up to chopper 4. this is 270 at the belt way split. how do we add cacity, make the traffic flow better at270. it's not bad now but most of the day it is. how do you do this without encroaching ohe space over here? you see so close to so many homes, businesses andid rces that potentially could be in the way