Washington Avenue runs approximately three miles, a relatively small stretch of road in comparison to the hulking concrete freeways and endless ribbons of asphalt that flow through Houston. But those three miles, stretching parallel along I-10 and dead-ending into downtown, are potent ones. Washington Avenue is a microcosm of Houston's history and future, succinctly merging the two in ways that no other area of town does as successfully. But at its current rate of......