Classification Information
Construction consultation for bridges, elevated roadways, railways, marine construction, dam and levee construction, and flood prevention and flood control systems; construction of bridges and elevated roadways and railways; marine construction; heavy civil construction of bridges, elevated roadways, railways, marine construction, dam and levee construction, and flood prevention and flood control systems; dam and levee construction; installation, maintenance and repair of flood prevention and flood control systems; repair or maintenance of bridges and elevated roadways and railways; dam and levee rehabilitation and maintenance
Building Construction and Repair