Sargent has the last floating (pontoon style) swing bridge in Texas. The swing bridge is the only access you can use to get to the beach or the free public boat ramp. It crosses the Intracoastal Waterway.
The bridge located on FM 457 is actually a 120 foot barge. When boats and barges need to pass by on the Intracoastal Waterway, they radio the bridge tower, stop signs turn on so that traffic will stop, then the bridge slowly floats or swings to the east. Plenty of time is given for the bridge to swing open before the boat or barge actually gets to the bridge. After the waterway traffic passes, the swing bridge floats or swings back into place. The bridge tower is open 24 hours a day.
The first bridge was constructed in 1943 as a floating wooden pontoon. At that time it was installed the bridge was 96' X 18'. In 1975 it was determined that the old wooden bridge needed to be replaced and a new metal pontoon bridge was installed. This new bridge was larger than the old bridge and better built costing $270,000. In 1981 new approaches were constructed. The bridge has stayed the same since 1981. In July 2009 Matagorda county consulted a moveable bridge consulting team. So far no improvements have been made to the bridge.