2-3. Bridge Reconnaissance Report Form (DA Form 1249). A DA Form 1249 supplements
the route reconnaissance overlay. For each bridge encountered during a deliberate
reconnaissance, instructions will be given to the reconnaissance party as to the amount of
detail required. Elements of bridge information are recorded in meters (Figures 2-3 and 2-4,
pages 2-8 and 2-9). Any item of information that is unknown is shown by a question mark
in the appropriate column of the report.
The heading information is self-explanatory. Complete the information as
The assigned serial number of the bridge is entered in column 1. This number
matches the serial number used in the bridge symbol on the route reconnaissance overlay.
The bridge location is entered in column 2. The location is stated in means of
The horizontal clearance is entered in column 3. The horizontal clearance is the
clear distance between the inside edges of the bridge structure, measured at a height of
0.3 meter above the surface of the traveled way and upwards. The horizontal clearance for
truss bridges, tunnels, and underpasses, however, is measured from 1.21 meters above the
traveled way. Any horizontal clearance less than the minimum required for the roadway
width of the bridge is underlined. Unlimited horizontal clearance is indicated by the symbol
for infinity ().
The under-bridge clearance is entered in column 4. The under-bridge clearance
is the minimum clear distance between the underside of each span and the surface of the
ground or water. The height above the streambed and the height above the estimated
normal water level, pertaining to the appropriate bridge type, is entered for each span.
Each span is listed (in sequence starting from the west) in column 5. If the
orientation of the bridge is due north and south, or so close to north and south that it is not
certain which is the most westerly span, the abbreviation for north (N) is inserted in
column 5 before the span, and the spans are listed in sequence, starting from the north.
The type of span construction is recorded by a number symbol in column 6.
Refer to Figures 2-5 and 2-6, page 2-10, and Table 2-3, page 2-11, for the symbols.
The type of construction material of each span is recorded by a letter symbol in
column 7. Refer to Table 2-4, page 2-11, for the symbols.
The span length is recorded in column 8. Span length is the center-to-center
distance between bearings; therefore, the sum of the span lengths may not equal the overall
length. Indicate spans which are not usable because of damage or destruction by putting
the # symbol after the span length dimension. Spans that are over water are indicated by
placing the letter W after the span length dimension.