Page 67 - Bridge and Highway Structure Rehabilitation and Repair

42 SECTION 1 ADMINISTRATIVE ISSUES

Figure 2.2 Bridge rehabilitation objectives.

3. Bridges need to be maintained regularly for safety and security reasons (Figure 2.3).
There are legal requirements for conforming to and complying with the standard proce-
dures.
The advantage of following standard procedures, in addition to safety and security, is
uniformity of construction for the numerous bridges rebuilt each year.
These procedures or specifications are prescribed by federal agencies such as AASHTO

and FHWA. They cover analysis methods, applied loads, and construction materials such
as steel, concrete, timber, and aluminum. In addition, design methods for substructures and
foundations are addressed.

Figure 2.3 Fascia girders need to be repainted to prevent corrosion.