NEW YORK — If Dan Dierdorf could beam himself into the press boxes of NFL stadiums around the country, he might keep calling games a few more decades.

NEW YORK — If Dan Dierdorf could beam himself into the press boxes of NFL stadiums around the country, he might keep calling games a few more decades.

But with two artificial knees, two artificial hips and a bad back, the travel required by his analyst job for CBS just became too much.

The 64-year-old Hall of Famer announced Wednesday he would retire after this season — his 43rd straight involved with the NFL.

Dierdorf played offensive line for the St. Louis Cardinals from 1971-83, earning All-Pro honors six times. He then headed straight for the broadcast booth. His three decades as an analyst marked the longest current tenure on TV.

"I've just never done anything else in the fall other than be in an NFL stadium," Dierdorf said in a phone interview.

Now he hopes to spend some time in a college football stadium. Dierdorf estimates that in those 43 years, he's attended just five games played by his alma mater, Michigan.

All those years of practicing on artificial turf in St. Louis wore down his joints, and walking through airports got harder and harder. Using a cane, he'd have to sit down every 100 feet.

Dierdorf said he still feels mentally sharp, a serious concern among retired NFL players. In some ways, the physical limitations made the decision easy; he really had no choice.

Dierdorf spent 12 years on ABC's "Monday Night Football" before rejoining CBS in 1999.

His most memorable moment is the 1994 Monday night game between John Elway's Denver Broncos and Joe Montana's Kansas City Chiefs, when Montana led a last-minute comeback in his final season.