Intelligent reuse of old railcar beds enabled the author to construct an access driveway to cross a 38-foot span without damaging the stream below.
The conventional approach--open-bottom arch culvert might have worked for the stream crossing, but it would have had a greater impact on the stream.
The approach ramps of open-bottom culverts are usually retained with stacked precast block--difficult to arrange in a neat arch and too industrial looking for the author on this site.
He leveled the trench bottoms with stone fill and gravel, then placed a series of interlocking precast blocks.
At grade, the abutments transition from plain rectangular blocks to blocks with a precast faux-stone face.