Complex sentence: Its builders were Charles and Alta Meredith, who built many other Washington County bridges; two other bridges in the county, known as the Hune and the Harra Covered Bridges, also employ the Long truss.
Split into simpler sentences: Its builders were Charles and Alta Meredith, who built many other Washington County bridges. Two other bridges in the county, known as the Hune and the Harra Covered Bridges, also employ the Long truss.