When rockfall detaches from slopes above I-76 along the Pennsylvania Turnpike, Route 22 through the Lehigh Valley, I-80 across the Allegheny Plateau, and I-99 through the Ridge and Valley, it follows trajectories determined by slope geometry, block shape, and launch velocity. Ditches and berms alone often cannot contain the bouncing, rolling, and airborne blocks that Appalachian fold-and-thrust belt sandstone, limestone, and shale beds along highway rock cuts produce. Flexible barriers are engineered to intercept rockfall at calculated impact points — absorbing the full energy of the event.
Access Limited designs and installs flexible rockfall barrier systems across Pennsylvania — each sized to the energy rating, trajectory analysis, and corridor exposure specific to the site.
Barriers in this range protect corridors from moderate rockfall — small to medium blocks with limited fall heights. These systems use deformable posts and cable braking elements to absorb impact energy.
High-energy barriers are specified for Pennsylvania's most severe rockfall corridors — where large blocks, long fall heights, or steep trajectories generate impact forces that exceed mid-range system capacities.
Ultra-high-energy barriers are engineered for extreme rockfall — massive block detachments, very long fall paths, or channelized rockfall corridors where energy concentrations exceed standard barrier ratings.
Access Limited's Cementon Road Bridge project showcased the specialized capability PennDOT corridors demand.
See why PennDOT, Pennsylvania Turnpike Commission, Norfolk Southern and CSX rail, mining operators, and utility providers trust Access Limited for flexible rockfall barriers and rockfall mitigation across Pennsylvania.
Access Limited delivers specialized flexible rockfall barriers across Pennsylvania's rockfall corridors. Complete the form to request an assessment or call our team directly.
