Use A 709 Grade 50W steel for unpainted bridges. Use A 709 Grade 50 steel for painted bridges. Use A 709 Grade HPS 70W steel for unpainted and painted bridges if it is economical or otherwise beneficial to do so.

Use 0.875 in. or 1 in. diameter bolts for bolted connections.

For bridges in the Amarillo District only, specify tension components to meet Zone 2 tension component impact test requirements.