CalTrans opened the west side of the Nordahl Bridge Friday to drivers traveling over State Route 78 in San Marcos.
Planners working with Caltrans and SANDAG are replacing the Nordahl Road Bridge to help ease the traffic on the ramps to and from SR 78.
At the same time, Caltrans and SANDAG are working to widen eastbound and westbound lanes on the 78. These two phases should be finished by the end of the year or next.
The east side of the bridge has been open to traffic before Friday and now, with portions of the westbound lanes open, commuters facing the infamous San Marcos gridlock should soon see some relief.
The full bridge with an additional turn lane on to SR-78 should be open by next month.
Cities of Escondido and San Marcos are working with Caltrans and SANDAG to complete the $41.1 million effort.