AUGUSTA — Motorists will have to find an alternate route from Old Belgrade Road for five days starting at 6 p.m. Thursday through 6 a.m. Tuesday.

The road will be closed at Stone Brook just east of the entrance to MaineGeneral Medical Center’s Alfond Center for Care, the regional hospital under construction.

Crews will be installing two eight-foot reinforced concrete pipe culverts.

A detour route will be posted, according to the Maine Department of Transportation.

To access homes and businesses on Old Belgrade Road west of Stone Brook, including MaineGeneral Medical Center and the Alfond Center for Cancer Care, motorists can use Civic Center Drive (Route 27).

Drivers needing access to locations on Old Belgrade Road east of Stone Brook can use West River Road (Route 104).

The posted detour will take motorists along Old Belgrade Road, West River Road, Townsend Road, Civic Center Drive, Bog Road and Old Belgrade Road, said Ted Talbot, spokesman for the transportation department.

The work is part of a $13 million project aimed at giving exit 113 access in all directions as well as linking Route 3 with Civic Center Drive, thus easing traffic congestion at exit 112, a busy interchange less than a mile to the south.

“Putting these new large culverts in for Stone Brook is an upgrade that will provide decades of benefit as part of the overall roadway system here,” said Shawn Smith, project manager, in a press release from the transportation department.

The nearly $13 million cost is being funded by the federal, state and city governments as well as MaineGeneral Medical Center.