Just drove 99 from Madera to Stockton Saturday.
Some construction spots to watch for Madera for about 3 miles, Merced for about 4 miles, Lathrop about 10 miles.
I know there is more construction south of Madera by the San Joaquin river about 1 mile and Kingsburg by the Kings River,about 6 miles.
99 is going through a major make over, with all that said, most of 99 is way better than it has been in years.
Haven't traveled I-5 in a while, it knocked my I teeth out the last time I was on it.