Sigma prepared bridge hydraulic analysis and design for the replacement of two pedestrian/golf cart bridge structures at the Las Vegas National Golf Course located in Las Vegas, Nevada.

The two structures were replaced with structures of similar size, span, configuration, and overall length.  One of the bridges was damaged during a 2005 storm event.  The second bridge was beyond its service life.  The replacement bridges were 120 foot-long, 10-foot wide multi-use pedestrian and golf cart bridge structures supported on cast in drilled hole concrete piers founded below maximum anticipated scour depth.

These replacement bridge structures were constructed adjacent to the location of the existing bridges and the existing bridges, including superstructure, piers, and abutments, were removed upon completion of the new bridge structures.  Both bridge decks were approximately 4 feet higher than the previous bridges and approximately 8 feet higher than exiting grade at the locations of the abutments in order to meet Clark County Regional Flood Control District freeboard design criteria.  New wingwalls, approaches, and associated grading were constructed outside the existing waterway to allow the new bridge profiles to tie into existing cart paths and grading.