The Texas Department of Transportation is seeking input through Dec. 20 about its plans to improve the I-35 intersection at Parmer Lane in North Austin TxDOT plans to spend about $25 million at the intersection to build a new diverging diamond intersection, in which vehicles cross to the left side of the road so left-turning and through traffic pass through simultaneously. A southbound bypass lane at Parmer would be added, and entrance and exit ramps would be reconstructed. Construction could begin in late 2018, and the project could be complete in summer 2020. Funding likely will come about $2.1 billion in revenue expected to flow into Central Texas from the state. The online open house is available at www.mobility35openhouse.com. Other area projects New traffic signal on Parmer In November, TxDOT began a project to install a new traffic signal on Parmer Lane at Legendary Drive/Riata Vista Circle near Apple Inc.’s Austin campus. The project also includes adding left-turn lanes. Timeline: November-early 2017 Cost: $839,000 Funding sources: Apple Inc., TxDOT Intersection improvements City staffers began work Nov. 18 on $647,000 worth of safety improvements at the intersection of   North Lamar Boulevard and Rundberg Lane in North Austin. Improvements include constructing raised medians and raised right-turn channelized islands, restriping and adding crosswalks. A pedestrian hybrid beacon will be built on Rutland Drive, and the pedestrian beacon on Rundberg by the Walnut Creek Library will be converted to a full traffic signal. The city plans to make $1.9 million worth of safety improvements at four city intersections, including  Lamar and Parmer Lane where work will begin in early 2017. Timeline: fall 2016-spring 2017 Cost: $1.9 million Funding sources: city of Austin, TxDOT Wastewater system upgrades The city began the Waters Park Relief Main project to install a larger-capacity wastewater system near Balcones District Park in November. The project is being done in coordination with completing the North Walnut Creek Trail from the park to the MoPac trail. Updated trail plans will be submitted in January. Timeline: November-mid-2018 Cost: $5.5 million Funding sources: Austin Water Jollyville sidewalk upgrades By the end of 2016 the city of Austin will begin a four-month project to improve sidewalks on Jollyville Road between Duval Road and Balcones Woods Drive. The $330,000 project will include new sidewalk construction and retrofitting existing sidewalks and ramps to bring them into compliance with the federal Americans with Disabilities Act. Some drainage work is dependent on weather, but the city expects to finish the sidewalk improvements in the spring. Timeline: late 2016-spring Cost: $330,000 Funding sources: city of Austin 2012 mobility bond