Massman Construction Co.
Black Rock Bridge (Lawrence County, Arkansas)Built 1949
Twelve-span deck truss bridge on US 63/US 412 over Black River and AR 25 at Black Rock
Open to two-lane traffic
Miami Bridge (Saline County, Missouri)general contractor, 1939
Cantilevered through truss bridge over the Missouri River on MO 41 at Miami
Open to traffic