Elztalbrücke, Girder bridge in Kaifenheim, Germany.

The Elztalbrücke is a prestressed concrete girder bridge on the A48 motorway, about 380 m long and up to 97 m above the Elzbach between Kaifenheim and Kehrig. Its deck rests on central octagonal hollow piers measuring 4.8 by 5.8 m, connected monolithically to a mushroom-shaped superstructure. The 30 m wide slab varies in thickness from 45 cm at the edges to 2.45 m at the piers.

The structure was built in the 1960s as part of regional infrastructure development. It connected two communities and formed a key component of highway expansion during that era.

The bridge carries the A48 over the Elzbach between the Kaifenheim and Kehrig municipal boundaries. Its deck is a single 30 m wide cast-in-place slab, poured on a launching gantry, whose thickness runs from 45 cm at the edges to 2.45 m at the piers. The octagonal hollow piers measure 4.8 m by 5.8 m.

The bridge carries the A48 motorway over the Elzbach between the Kaifenheim and Kehrig municipal areas; there is no pedestrian path on the deck. The structure is best viewed from the valley floor below, where the octagonal piers and the 97-metre height are visible. Access to the valley is via local roads from Kaifenheim or Kehrig.

The deck was cast on a launching gantry, a movable formwork that advanced span by span across the valley. The superstructure is monolithic with all piers and the 20.7 m abutment boxes, yet a single expansion joint splits it above the middle of the valley.