A road project on the Alexander Hamilton Bridge in New York expected to create traffic nightmares for New Jersey drivers using the George Washington Bridge got off to a good start on the project's first weekday  but drivers are warned not to be lulled into thinking there won't be any problems.

There were no major delays across the GWB on Monday morning despite concern for miles of slow traffic approaching the bridge from New Jersey.

"We scared everyone," laughs New Jersey 101.5 traffic anchor Bob Williams. "But remember it's also the third week of July with lighter than normal volume. Don't be lulled into a false sense of security. The jury is still out about how traffic patterns at the GWB will form."

Described as the New York State's  largest single-contract project ever with a price tag of $407million, the work is expected to cause delays of at least 5 miles approaching the GWB with works scheduled for 24 hours a day until the end of 2013.

With lanes taken on GWB's lower deck, multiple lanes of traffic will be reduced to just one on the approach to the Alexander Hamilton Bridge. The upper deck of the bridge is unaffected for through traffic.

Williams says the potential still exists for "unprecedented delays" all day, every day as delays could stretch back to Route 80 and onto the New Jersey Turnpike as well as local roads leading to I-95.

New Jersey drivers are advised to use the train, the three Staten Island crossings or the Tappan Zee Bridge as alternative routes.