From the Oklahoma Department of Transportation:

Northbound and southbound I-35 traffic will be diverted to the on- and off-ramps at Fountain Rd. (mm 211) near Tonkawa in Kay County from 8 p.m. Friday to 10 a.m. Saturday for ongoing bridge work. I-35 will be inaccessible from Fountain Rd. during this time. Those wishing to avoid the area could use SH-15 to US-77 to US-60/US-177 to I-35.

I-35 will remain narrowed to one lane in each direction at Fountain Rd. and the bridge remains closed through early fall 2017.

Additionally, northbound I-35 traffic will be diverted to the on- and off-ramps at W. Braman Rd./W. Bender Rd. (mm 230) at Braman just south of US-177 in Kay County from 8 p.m. Friday to 10 a.m. Saturday for ongoing bridge work. During this time, I-35 will be inaccessible from W. Braman Rd./W. Bender Rd.