There is no roadside sign pointing out where the view point is, but it wasn't too hard to find once I saw the bridges from the highway.
John Harvey Photo > John's Overnight Page > Spences Bridge > Cisco Bridges
Bridges In Lytton
The closer bridge is the Highway 12 to Lillooet. The bridge behind is a rail line.
John Harvey Photo > John's Overnight Page > Spences Bridge > Bridges In Lytton