PennDOT is moving forward with a pair of projects along two heavily traveled roads in Lehigh County that will result in traffic delays.

On Wednesday, PennDOT announced work will begin April 8 on a project to rehabilitate Route 309 between Chapmans Road and I-78 in South Whitehall Township.

The project includes concrete patching, milling and paving, new pavement markings and new guide-rail. Also included will be repairs to the Route 309 box culvert over Little Cedar Creek.

Motorists can expect northbound or southbound lane restrictions on the four lane section of Route 309 (I-78 to Walbert Avenue) between the hours of 7 p.m. and 7 a.m. Motorists should also expect lane restrictions with flagging on the two lane section of Route 309 (Walbert Avenue to Chapmans Road) between the hours of 10 p.m. and 5 a.m.

The $3.2 million project is scheduled to be complete in November.

The other project announced Wednesday, scheduled to begin April 7, is the replacement of the Schantz Road Bridge over Breinig Run in Upper Macungie Township.

The project involves replacing the structurally deficient bridge, reconstructing a portion of Schantz Road by removing an S-curve (near Adams Road) and realigning it with a straight section of roadway, installing new drainage facilities and guide-rail, new line paint and other miscellaneous construction.

During construction, Schantz Road will be closed and detoured between Adams and Twin Pond roads. The posted detour will use Route 100 and Route 222.

The $1.6 million project is scheduled to be complete in July 2015.

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