Sept 24 (Reuters) - Wall Street's main indexes opened

modestly higher on Wednesday as traders assessed measured

comments from U.S. Federal Reserve Chair Jerome Powell and

looked ahead to crucial economic data due later in the week.

The Dow Jones Industrial Average rose 76.2 points, or

0.16%, at the open to 46,368.94. The S&P 500 rose 12.9

points, or 0.19%, at the open to 6,669.79​, while the Nasdaq

Composite rose 82.5 points, or 0.37%, to 22,656.015.