I remember this old bridge years ago. When I was a little kid my family and I used to go swimming here. It's where I learned how to swim. I believe they dropped it sometime around 95 or 96, not sure. This bridge crossed the little meramec and t'd at oak grove church rd. Once across you had to go right or left. Either way you went, you had to go under a massive ledge that the road was cut out under. I was always afraid it would fall on our school bus every morning on the way to school. Aaaah...the funny memories. They've since built a new concrete bridge around five hundred yards up river.
Those photos are of Bruns' Bridge.
http://bridgehunter.com/mo/franklin/mill-hill/
The portal design, the stringer/girder bridge curving in the background of photo 2, 3. I even recognize the sandbar in photo 1 from my visit.