The study named Boston, New York, and Norfolk, Va., as the three most vulnerable metropolitan areas. Another study found that just a 1.5-foot rise in sea level would expose about $6 trillion worth of property to coastal flooding in the Baltimore, Boston, New York, Philadelphia and Providence, R.I., areas.
A basic asphalt driveway costs about $2 to $5 per square foot, according to CostHelper.com. That amounts to $720 to $1,800 for a basic standard-size residential, two-car asphalt driveway measuring 18 feet wide and 20 feet long. A stamped asphalt pattern, such as in the shape of bricks or stones, costs $3 to $9 per square foot, or $1,080 to $3,240 for a standard-size driveway. By comparison, the cost for a plain concrete driveway runs $3 to $10 per square foot, according to Costhelper, or $1,080 to $3,600 for a standard-size, two-car driveway. Customized concrete driveways with decorative elements can run $15 to $25 per square foot, or $5,400 to $9,000 total for the driveway.
1 An asphalt driveway typically costs about $2 -$5 a square foot, $1,200 - $3,000 for a 12'x50' single-car driveway; or $25,000 -$50,000 for up to a quarter mile. Do-it-yourself supplies can cost $50 -$200 depending on the size and condition of the driveway, and the quality of the sealer. 2  Professional driveway sealing can cost $200 -$500 or more.