Fuss & O'Neill, Inc Share: Environmental Services Fuss & O'Neill, Inc Visit Website 146 Hartford Rd Manchester, CT 06040 (860) 646-2469 About Map About Fuss & O’Neill is a full-service engineering firm with a depth of staff and experience to complete any project – from initial design to final construction. What's Nearby? Distance: 5 10 15 20 25 50 mi.