Historical bridge and road specifications

TxDOT Specifications

Year	Title
1918	1918 Specifications and Contract
1920	1920 Specifications: Roads and Bridges
1920	1920 Specifications: Road and Bridge Construction in Travis County
1925	1925 Standard Specifications for Road and Bridge Construction
1926	1926 Road and Bridge Specifications
1934	1934 Special Bridge Specifications
1935	1935 Specifications for Design of Structures
1939	1939 Bridge Specification Material Requirements
1950	1950 Standard Specification for Road and Bridge Construction
1962	1962 Standard Specification for Road and Bridge Construction
1972	1972 Standard Specification Construction of Highways, Streets and Bridges
1982	1982 Standard Specification Construction of Highways, Streets and Bridges
1993	1993 Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges
1995	1995 Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges (Metric)