3.1.7 Bridge Plan Sheets

Refer to the
PS&E QC Milestone Checklist
for information to include on the Bridge Plan Sheets. For detailed information on structural detailing refer to TxDOT’s
Bridge Detailing Guide
.
Permanent Structure Number (PSN)
Every bridge and bridge class culvert throughout the nation is assigned a PSN. The PSN is comprised of the following:
  • The first two digits are the
    District
    number (e.g., Abilene District = 08);
  • The next three digits are the
    county
     number (e.g., Haskell County = 105);
  • The next digit is always 0;
  • The next four digits are the
    control number
     (e.g., 0360);
  • The next two digits are the
    section number
     (e.g., 04); and
  • The last three digits are the
    structure number
     (e.g., 016).
PSNs must be unique to each structure; they cannot be changed after a bridge is added to the inventory, nor can they be reused when a bridge is replaced. Bridges that are being widened or rehabilitated retain their PSNs.
Refer to TxDOT’s
Bridge Project Development Manual
for more information on obtaining a new PSN for on-system and off-system bridges.
3.1.7.1 Bridge Hydraulic Data Sheet
Each bridge and bridge class culvert should have its own Bridge Hydraulic Data Sheet to convey delineated drainage areas, floodplain cross sections used in hydraulic modeling, run-off calculations used, and other elements to document the hydrology and hydraulic design for these structures.
Refer to TxDOT’s
Hydraulic Design Manual
for information on drainage design for bridges and bridge class culverts.
Refer to
DES – Hydrology and Hydraulics Section
 for examples of hydraulic data sheets.
3.1.7.2 Bridge Layout
Each bridge and bridge class culvert to be constructed or widened should have its own Bridge Layout which clearly illustrates the proposed work and the location of any boring logs. Preliminary and Final Bridge Layouts have plan and profile views drawn at the same scale (horizontally and vertically) of:
  • 1” = 40’; or
  • 1” = 20’.
Horizonal and verticals scales must not be mixed.
Boring logs can be shown on the bridge layout or on separate sheets as indicated in TxDOT’s
Bridge Detailing Guide
.
Refer to TxDOT’s
Bridge Detailing Guide
for other specific requirements for bridge and bridge class culvert layout sheets.
3.1.7.3 Estimated Quantities Sheet (Bridge E&Q Sheet)
The Bridge E&Q sheet is a summary of the bid items for all bridges, also including PSN identification and bearing seat elevations (if applicable for the bridge type).
3.1.7.4 Structural Details
Structural details sheets cover all the details and plan sheets that convey the construction of bridge superstructure elements (i.e., rail, slab, and girders), and substructure elements (i.e., bent caps, columns, and foundations).
3.1.7.5 Bridge Standards
These include standards such as for miscellaneous standards, bridge rail standards, prestressed concrete beams, steel beams, etc. Bridge standard sheets can be found on TxDOT’s
Bridge Standards webpage
.
3.1.7.6 United States Coast Guard Bridge Permit
Bridges that require a United States Coast Guard (USCG) Bridge Permit must adhere to bridge permit requirements outlined in the USCG Bridge Permit Application Guide. The Environmental Affairs Division (ENV) has put together the TxDOT.gov
US Coast Guard Coordination webpage
that designers should reference for all applicable information needed to assemble plans in accordance with USCG requirements.