Recessed freeway plan would destroy more homes

Ahwatukee Foothills News
12-7-05
By Doug Murphy

The old saw reminds dreamers to be careful of what they wish for because it could come true.

Such is the case for those many Ahwatukee Foothills residents who have expressed a preference to see the proposed South Mountain Freeway built below ground level so sound walls won't mar their view.

However, a recessed freeway would necessitate destroying another 440 homes along Pecos Road to manage water flow.

"When you do that, you potentially take up more space and homes for retention basins," said Amy Edwards, whose firm was hired by the Arizona Department of Transportation (ADOT) to assist in highway planning.

The 20-foot-deep retention basins would hold runoff water from South Mountain and Ahwatukee Foothills neighborhoods, according to Edwards, a project engineer with HDR Engineering, a consulting business with offices in Phoenix. Also, pumps would have to be installed to move water from the freeway's north side to the south.

The matter was discussed at the South Mountain Citizens Advisory Team meeting on Dec. 1. The panel is a volunteer committee to ADOT.

Edwards said "no decision has been made yet" on building the freeway below ground level.

At this point in the rough design process, ADOT has estimated that an above ground freeway on Pecos Road would require the destruction of about 255 homes. It would also result in walls 10- to 20-feet tall to muffle traffic noise.

Other issues attached to building a freeway below ground level include how to allow for animal migration to and from South Mountain, pump stations to move the standing water from the north side of the freeway to the south side, and the cost of relocating underground utilities, including a major 48-inch water supply line under Pecos Road.

South Mountain Freeway is proposed to open with three lanes east and three lanes west, expanding to five lanes in both directions in the future.

The reporter can be reached at (480) 898-7914 or by e-mail at dmurphy@aztrib.com.