There you have it, all you drivers and passengers in the 30,000 to 50,000 vehicles a day that travel the sort-of highway lanes of Texas 360 in southeast Arlington, your road is going to be built into a for-real highway (actually, a toll road) “as soon as is practical.”That not-very-reassuring remark comes from Kenneth Barr, the former Fort Worth mayor who is now chairman of the North Texas Tollway Authority. The agency is in talks with the Texas Department of Transportation about building the new road.Texas 360 is a key north-south corridor on the east side of Arlington. Its busiest portion, around Abram Street, carries 193,000 vehicles a day, but the for-real highway ends on the south at Camp Wisdom Road.The part of Texas 360 just north of Camp Wisdom ranks 39th among the most congested corridors in Texas, according to the North Central Texas Council of Governments.Plans to improve the 10-mile segment of Texas 360 from the Camp Wisdom intersection southwest to U.S. 287 in Mansfield have been talked about for at least a decade. Not long ago, it looked like it might really happen.The transportation department and NTTA had a plan under which the new lanes could be finished by 2015. Now it looks like the work might not begin until 2015 and won’t be completed until 2018.The problem, as anyone might expect, is money — as in, the transportation department doesn’t have the $625 million needed. The previous agreement called for the state to build the new lanes and NTTA to operate and maintain them, collect tolls and split the proceeds with the transportation department.Now, Star-Telegram transportation writer Gordon Dickson reported Friday, they’re talking about scaling back the project, going from what had been three to four lanes in each direction to just one to two lanes in each direction. Places where there is just one lane in each direction would have passing lanes.The cost for that would be about $300 million. Current discussions would have the transportation department loan that amount to NTTA and the toll authority would build the new lanes, Dickson reported.The question will be how much better the scaled-down version would be and whether it’s enough better that drivers would be willing to pay the tolls.