Per local newspaper ... see link
"start(ing) work to replace the bridge in September. Work hours would be 6 a.m. to 10 p.m. six days a week until the project is completed in July 2015, with pile driving limited to daylight hours.
Collier Boulevard will be closed to vehicles between West Elkcam Circle and Tigertail Court for most of the construction, when there will be one lane of bridge traffic on either side. Vehicles would be detoured onto Bald Eagle Drive and San Marco Road."