OB702 Roscommon Bridge Widening & Road Alignment

The existing bridge OB702 was widened to take the skew out of the road. The overbridge comprised of Opti-Cadre units and reinforced earth abutments.

The bridge was widened to the Claremorris side by approximately 10.5m while leaving the existing structure intact and maintaining traffic flow. The reinforced earth walls were constructed with little interference to the existing passing traffic and the railway line. Other works included palindine fencing, high level safety barrier and road surfacing. The work was necessary to create a straight road across the railway line to enable all local traffic to traverse the bridge safely. This project was the first of its type to use Opti-Cadre units to extend an existing bridge.

please follow link below to see installation of precast concrete portal frame:

http://www.conneelybuilders.com/video-gallery/?catid=cat1&slg=ob-702-roscommon

Havertys OB158A

This project involved the closure of three number Iarnród Eireann Level Crossing’s. The crossings were replaced by a single overbridge and associated approach embankments. The overbridge comprised of a contractor designed structure and contractor designed reinforced earth wing walls. Construction of the new Overbridge consisted of 11.50m wide Precast Optri-Cadre units each weighing 36 tonnes and included precast concrete parapet units. The existing level crossing gates were taken down and closed to traffic. The new road was 4 metres wide with concrete post and wire fencing, and constructed over a length of 650m to tie into existing farmer access roads.