Oxford residents are complaining of "terrible" delays in the city because of work on the Old Abingdon Road that is scheduled to end in March 2011.
Drivers at the Redbridge Park & Ride have restricted ring road access, causing tailbacks during rush hour.
Network Rail is upgrading a bridge so bigger containers can be carried from Southampton port across the country.
It is part of a £71m scheme which they hope will remove up to 50,000 lorry journeys a year from the roads.
Local resident Irene Stratton said: "The traffic is tailing back up Hinksey Hill past my house from early - before 7.30.
"The delays from Abingdon are terrible too."
She added that it would probably be quicker to make her usual commute to the John Radcliffe by foot.
Other residents have complained of heavy tailbacks on parts of the A34, the Iffley Road and Donnington Bridge Road.
A Network Rail spokesman said there would be some re-openings during December and stressed the need to look at the "bigger picture."
He said the environmental, economic and efficiency savings of carrying more freight by rail would ultimately benefit everyone in the region.