One of the most dramatic, and needed, changes have been made to one of the most pivotal interchanges in Miami.
SR 836 eastbound has a new traffic pattern current to April 2013 that takes it down the collector distributor lanes. Traffic wishing to exit to Milam Dairy Road will now exit, braided under the onramp from NB 826, which as it is eliminates weaving. I'm under the impression now the new mainline will be built and in place of the old eastbound bridge.
SR 826, though is seeing more drastic changes. Northbound has been narrowed to 3 lanes at Flagler, which is the existing flow through 836. Why? SR 836, Flagler Street, and 8th Street are now combined in a set of collector-distributor lanes. The C-D for 8th to Flagler is temporary as contractors are gradually replacing the bridge. Traffic coming in will pick up the Palmetto again under the ramp to 836. Also there is a new exit point to Milam Dairy from the ramp.
Anyone SB wishing to access EB 836 and Milam Dairy will take a U-Turn at 82nd Ave. For EB this is temporary, but I think it might be permanent for Milam Dairy traffic.
I find this one of the most drastic changes to traffic flow. It is one of the first radical improvements to come since before, and lots of weaves on the mainline are eliminated as a result of it.