(standardized sequence) (4-25)
FRAME 4-26. INFORMATION FRAME.
Refer to pages 8 and 9 of Appendix I. Here are listed the seven components of the road classification formula,
the coded symbols used for some of them, the characteristics they represent, and the correct sequence for showing
the components. The road classification formula tells the user whether or not there are limiting characteristics, and
if so what they are; width of both roadway alone and roadway with shoulders; road surface material; length, when
deemed appropriate; the existence of obstructions; and special conditions when they occur. When conditions along
the road change, a separate formula for this section of road is composed, with its limits indicated on the mileage
(one span not usable) (4-53)
The "X" shown after the span length of one of the concrete slab spans indicates that damage has rendered this
span not usable. Unless it can be repaired, bypass will be necessary to movement of military traffic.
What is meant by the infinity symbol ∞ shown in the overhead clearance column for bridges 1 and 3?