2-6. Additional Bridge Information. The following bridge information should be collected
and recorded if possible. Some items may have already been mentioned.
Approaches, including limiting factors, minimum traveled-way width, surface
material, and obstructions.
The geographic feature (and its width and depth) that the bridge spans.
Current conditions, width and depth at the mean water level, tidal conditions,
flood susceptibility, location of dams and locks, nature and slope of banks, and the
type of stream bottom if the crossing is over a water obstacle.
Abutments, including foundation conditions, type and material of construction,
and bearing areas.
Intermediate supports, including foundation conditions, type and material of
construction, bearing areas, height aboveground or mean water level, horizontal
clearance between supports at ground or mean water level, special design features
(such as ice breakers), and critical dimensions required for demolition or
Bridge structure, including a detailed description of the type and material of
construction, wearing surface, deck or flooring, and supporting members. Also
include capacity dimensions if applicable (Table 2-6, page 2-13); engines and
machinery for swing, lift, bascule, and retractile bridges; supply, utility, or
communication lines supported by the bridge; date of construction; critical
dimensions of demolition; and the MLC calculation (Appendix B, FM 5-170).
Repair information, including a description of the nature of repair or the
reinforcement needed; an estimate of time, labor, and material required;
availability of construction material nearby; and results to be expected from
repairs or reinforcement. Extensive repair information is recorded on a
DA Form 1711-R and is attached to the DA Form 1249.
Demolition information, including a description of the demolition procedures
planned and the expected effect; a description of any prior preparation; and an
estimate of time, labor, and material required (FM 5-250).
Alternate crossing sites, including data concerning the approaches; crossing type
(ferry, ford, or floating bridge); and an estimate of time, labor, and materials
required to construct the alternate crossing.