The Long–Allen Bridge is a truss bridge carrying Highway 8 across the Ouachita River at Harrisonburg in Catahoula Parish, Louisiana. This is the only point where Louisiana 8 crosses the Ouachita River in Louisiana.The structure is considered to be in "Poor Standing" by the Louisiana DOTD. As of November 2017, the bridge was no longer in commission. In January 2018 the bridge was demolished