text: Team Operations
  PHYSICAL DAMAGE
  4-126. When reporting physical damage, report the number of spans that are damaged and destroyed
  out of the total number of spans on the bridge. Note that the deck or floor of a railroad bridge can be
  solid or open track.
  No Damage--Military action has caused no apparent damage.
  Light Damage--The bridge has sustained superficial damage, but the roadway remains
  undamaged.
  Moderate Damage--All spans remain intact, but one or more spans has sustained holes in the
  deck or floor. For pontoon bridges, one pontoon section has been sunk.
  Severe Damage--All spans remain attached, but one or more spans has sustained 50 percent
  destruction to the deck or floor width. For pontoon bridges, two or more nonadjacent pontoon
  sections has been sunk.
  Destruction--At least one span has been dropped. Piers or abutments might have sustained
  damage or they might have been destroyed. For pontoon bridges, two or more adjacent pontoon
  sections have been sunk.
  FUNCTIONAL DAMAGE
  4-127. Using the assessment of physical damage can help determine the level of functional damage.
  Highway Bridge--When you report that a bridge has sustained moderate to severe damage,
  identify the number of lanes that remain open (on a highway bridge) and what how much traffic
  can still use the bridge.
  Railroad Bridge--Moderate or greater physical damage to a railroad bridge generally renders
  it unusable.
  Pontoon Bridge--Recuperation time may be short in duration for a pontoon bridge that has been
  destroyed due to the destruction of a few sections. Several factors such as the presence or
  availability of spare sections, repair capability, or both, can rapidly reverse the effects of an
  attack. Some might be repaired before the combat assessment report is completed.
  Permanent Spanned Bridge--When a permanent bridge span sustains moderate to severe
  physical damage, assessing the extent of functional damage is difficult. The combat assessment
  analyst can seldom see under the bridge, but the damage there often exceeds the damage he can
  see on the deck. This is due to the delayed fuses used on most bridges.
  BUILDINGS
  4-128. A building is designed to environmentally shelter an enclosed function or equipment.
  Destruction of the building is not required. The point is to destroy the critical element(s) it houses.
  TYPES
  4-129. These include framed buildings, buildings with load-bearing walls, high multistory buildings,
  and buildings with multiple wings.
  Framed Buildings--Framed structures (such as military headquarters, office buildings, and
  aircraft hangars) rarely collapse totally in an attack with conventional weapons. However,
  regardless of external and overall damage, the building's frame tends to remain intact. On the
  other hand, a steel or concrete frame need not collapse for the building to sustain damage at the
  levels previously described.
  Buildings with Load Bearing Walls--In contrast to framed buildings, those with load-bearing
  walls, that is, walls that carry the weight of the floor and roof, generally sustain damage levels
  equal to the amount of building collapse, and the damaged elements generally include the
  load-bearing and non-load-bearing structural elements.