AUSTIN -- Now through the end of July, drivers can expect lane closures on MoPac.
They will be in both directions, but the lanes are only expected to be closed for about 15 minutes at a time in preparation for construction which will begin by the end of the year.
There are flashing signs warning drivers of nightly lane closures from 9 p.m. to 5 a.m.
You might not expect to hear people happy about the disruption, but some homeowners along MoPac say it's been a long time coming.
Plans are to build a toll lane in each direction for 11 miles, as well as sound walls in a seven mile section.
Eric Hansen says, "For the folks like us that are right up on MoPac, it's supposed to be somewhere between a 20 to 30 decibel reduction in sound. So that means a lot. It means we can be in our back yard and actually have a conversation."
The toll lanes will run downtown to Parmer with only three on and off points.
One begins at Ladybird Lake, another at Far West Boulevard near 2222 to provide access to 183, and at Parmer Lane.
When traffic is heavy, the tolls will go up. When traffic is light, they'll go down.
Electronic signs will display the costs of the changing tolls, so drivers will know the price when making the decision whether to use the express lanes.
The project also includes improvements for bicycle and pedestrians along the corridor.
Construction is set to begin by fall 2013 with a completion date of late 2015.