A vertical curve crosses an 8-ft diameter pipe at right angles. The pipe centerline is located at 116 85 and its centerline is at elevation 1021.50 ft. The PVT of the vertical curve is at 120 00 and elevation 1100 ft. The vertical curve is equal tangent, 900 ft long, and connects an initial grade of 3% with a final grade of -2%. Determine the depth below the roadway surface of the top of the pipe. What is the maximum design speed for this road