Heavier Fiber Optic Cable Box Cover

AT&T installed a new fiber optic box in my front yard last year.  The box's lid is green and about 18" wide x 24" long.  It has the words "AT&T" and "Carson" cast in plastic letters on top.  This lid is cracked.  My question:  Is there a stronger lid provided by AT&T that can handle cars, trucks, etc. parking on top of it?