| State | Square Feet (Thousands) |
Actual Cost (Millions) |
Cost in 2010 Dollars (Millions) |
|---|---|---|---|
| Missouri | 28 | 0.5 | 0.7 |
| Colorado | 1,388 | 21.4 | 32.2 |
| Connecticut | 311 | 2.1 | 4.7 |
| Florida | 11 | 0.1 | 0.2 |
| Georgia | 1,746 | 26.1 | 30.3 |
| Indiana | 528 | 12.0 | 17.5 |
| Iowa | 69 | 0.7 | 1.2 |
| Kentucky | 11 | 0.7 | 0.8 |
| Louisiana | 133 | 2.2 | 2.4 |
| Maine | 19 | 0.3 | 0.4 |
| Maryland | 5,180 | 159.6 | 218.0 |
| Massachusetts | 381 | 18.0 | 20.0 |
| California | 12,706 | 203.1 | 354.7 |
| Minnesota | 3,105 | 26.0 | 57.1 |
| Wyoming | 8 | 0.1 | 0.1 |
| Nevada | 487 | 9.5 | 10.3 |
| New Jersey | 2,898 | 74.0 | 104.9 |
| New York | 1,729 | 49.1 | 70.0 |
| Ohio | 3,565 | 54.4 | 66.3 |
| Oregon | 180 | 2.5 | 3.8 |
| Pennsylvania | 858 | 46.0 | 51.2 |
| Puerto Rico | 243 | 9.8 | 12.1 |
| Tennessee | 106 | 5.8 | 6.1 |
| Utah | 1,024 | 9.1 | 12.3 |
| Washington | 254 | 12.6 | 13.9 |
| Wisconsin | 1,560 | 26.1 | 34.1 |
| Michigan | 1,800 | 48.5 | 71.1 |
| All | 40,327 | 820.2 | 1,196.5 |
Table 3 lists the states that have constructed at least one Type II barrier (i.e., barriers constructed for an existing highway). It should be noted that the National Highway System Designation Act of 1995 restricted Federal participation in Type II noise barriers to those projects that were approved before Novemeber 28, 1995 or are proposed along lands where land development or substantial construction predated the existence of any highway.
