Construction of an additional through lane along approximately four miles
of eastbound I-66 between the Dulles Connector Road (Route 267) in Fairfax
County and Fairfax Drive (Route 237) in the Ballston area of Arlington County,
Virginia. The project also involved ramp modifications at Exit 69 and Exit 71,
bridge rehabilitation and/or repairs, widening of several bridges, constructing
a new grade-separated crossing of the Washington & Old Dominion (“W&OD”) Trail
at Lee Highway (Route 29), replacing and/or constructing new sound barriers,
park and trail modifications, landscaping, stormwater management and drainage
improvements, and new signage and lighting.