As appropriate, apply new bridge design requirements to various elements for bridge widenings. Perform a load rating analysis and complete a condition survey before plans are started. Load Ratings must conform to the current edition of the

TxDOT Bridge Inspection Manual. Refer to the TxDOT Bridge Project Development Manual

for additional requirements for minimum load ratings and considerations related to modifications of existing structures.

Review the Bridge Inspection follow-up action recommendations and the condition surveys and include all necessary recommendations unless approved by the Bridge Division.

Design widened portions for HL93 loading using the AASHTO LRFD Bridge Design

Specifications

and this manual.

Show load rating of the existing structure to remain as well as design loads for the widening on the bridge plan, for example, HS20 (Existing) and HL93 (Widening).