Craycroft Road. Three conceptual alternatives are presented which offer various channel
alignment or bridge design configurations at this site. Figure 10.24 shows Alternative I. This
alternative utilizes bank protection works with the central embankment designed to guide the
flow through the bridge. The pier elevations are designed according to the worst scour
potential of the two branches and are the same for both tributaries. The design should also
consider the condition resulting from grade control failure on Pantano and should utilize circular
piers to minimize problems due to adverse flow alignment.
Figure 10.24. Alternative I for Craycroft Road Bridge crossing.