Northern Virginians can comment on the commonwealth’s transportation spending plans for the next six years during a hearing scheduled for next week in Fairfax.

The hearing, one of a set scheduled statewide, is part of the regular review of Virginia’s six-year projection on transportation spending. The plan doesn’t start from scratch, but rather advances many projects you already have heard of, or might see in its initial phases.

However, this year’s draft plan, which needs to get final approval from the Commonwealth Transportation Board after the hearings, does reflect the results of the General Assembly session that approved about $3 billion in new transportation spending requested by Gov. Robert F. McDonnell (R).

The Post’s Anita Kumar reported last week on the Virginia Politics blog that the board had heard from the governor and released its proposed spending plan for 2012-2017, but here are some more highlights about the Northern Virginia projects in the plan.

The Virginia Department of Transportation says the plan would fund these new projects:

I-66 Gainesville to Haymarket – Add one HOV lane and one regular lane in each direction from Route 29 in Gainesville to Route 15 at Haymarket (three miles). A new interchange would be constructed at I-66 and Route 15. The $132 million project would begin in 2015 and take three years to complete.

I-66 active traffic management system – Spend $32 million to implement the latest traffic management technology to ease congestion on I-66. Implementation would begin in 2012.

I-395 HOV ramp at Seminary Road – Construction of a High Occupancy Vehicle ramp to the Mark Center. The $80 million project would begin in 2015. (This is a key proposal to ease traffic congestion likely to result from the addition of 6,400 employees to the Mark Center under the federal Base Realignment and Closure program, which is scheduled to be in place by Sept. 15.)

I-95 High Occupancy Toll lanes – Build 29 miles of HOT lanes on I-95 from Garrisonville Road in Stafford County to the vicinity of Edsall Road on I-395 in Fairfax County. The draft plan includes about $52 million from the state. The majority of funding for the project would come from the private sector. Construction could begin in 2012 and would take three years. Environmental review is underway and public information meetings will be held in the fall. (This project is far more controversial than the Capital Beltway HOT lanes now under construction.)

Route 7 in Fairfax County – Widen this key commuter route from four lanes to six lanes between Reston Avenue and the Dulles Toll Road (5.3 miles). The draft program includes $30 million for design, which would begin this fall. There’s no funding right now for right of way or construction. (The six-year plan doesn’t tell you something is a done deal. It tells you what’s in the pipeline.)

Route 7 at Sycolin Road in Leesburg – Construct a $21.6 million overpass to carry Sycolin Road over the Route 7 Bypass. Construction could begin in 2014.

Route 7 at Belmont Ridge Road in Loudoun County – Construct a $72 million interchange, possibly beginning in 2015. Loudoun County would design and construct the project, while VDOT would acquire the right of way.

Route 1 at Route 123 in Prince William County – The draft includes $35 million to widen Route 1 beginning in 2015. Phase two of the project, construction of the interchange, is not yet funded.

Route 123 in Fairfax – The draft includes $15 million to build a connection to George Mason West Campus Road.

Fairfax County Parkway – Construct a loop at Rolling Road. The draft plan includes $14 million toward the $25 million project. Construction is scheduled to begin in 2015.

Battlefield Parkway Extension in Leesburg – Extend the parkway for one mile. Construction on the $11 million project would begin in 2015.

These next projects would be built either by VDOT or a local jurisdiction.

Route 1 North in Prince William County – Design of this $37 million reconstruction and widening project could begin in 2013 and construction could start in 2017.

Route 7 and Lexington Drive in Ashburn – Build a bridge to carry Lexington Drive over Route 7. Design on the $25 million project would begin in 2013 and construction would begin in 2016.

Route 7 in Tysons Corner – Draft includes $23 million toward $308 million in roadway improvements. Design would begin in 2013.

Route 123 in Tysons – The draft plan includes $19 million for this $56 million project to improve access to future Metrorail. Construction would begin in 2014.

Columbia Pike Streetcar Project – The draft plan includes $35 million toward implementation of Arlington County’s streetcar project. Design could begin in 2013.

Dulles Toll Road – The draft includes $21 million of $25 million for Reston Metro access. Design could begin in 2012.

Route 15 (Market Street) in Leesburg – The draft includes a $5.5 million project for 300 park-and-ride spaces.

The board is scheduled to vote on a final plan June 15 after the statewide hearings.

The Northern Virginia hearing is scheduled for 7 p.m. May 4 at VDOT’s regional headquarters, 4975 Alliance Dr., Fairfax.