21C: Bridge Crewmember

Major Duties: Bridge crewmembers command, serve, or assist as a member of a squad, section or platoon. They provide conventional and powered bridge and rafting support for wet and dry gap crossing operations. Duties for MOS 21C at each level of skill are:

• Skill Levels
  • Skill Level 1 MOSC 21C1O. Operates bridge truck and light vehicles. Operates the bridge erection boat. Prepares bridge site, handles shore lines, and assists in rafting operations. Assists in the installation of overhead anchorage system components. Installs kedge anchorage systems. Launches or retrieves ribbon bridge bays. Assists in the assembly of military bridges. Prepares and installs demolition firing systems. Arms, installs, and disarms antipersonnel or antitank mines.
    
    
  • Skill Level 2 MOSC 21C2O. Directs construction of fighting positions and wire entanglements. Employs the M180 demolition cratering charge. Determines limiting slopes, curves, stream velocities, and gap width. Conducts engineer reconnaissance. Directs crew in the assembly and maintenance of fixed bridges. Directs crew in the assembly of raft and float bridges. Operates and or supervises the use of bridge erection boats.
    
    
  • Skill Level 3 MOSC 21C3O. Supervises personnel in the installation and removal of a hasty protective minefield. Collects data and calculates the demolition requirement for explosives and related materials. Conducts road, tunnel, ford, and bridge reconnaissance. Directs the off-loading and assembly of float and fixed bridges. Performs float and fixed bridge site layout. Supervises installation of an overhead cable anchorage system.
    
    
  • Skill Level 4 MOSC 21C4O. Assigns tasks to subordinate personnel. Enforces safety standards, field sanitation, communication procedures, security and job specification. Plans and supervises personnel in the construction of float and fixed bridges. Supervises in mine warfare, demolitions, and combat construction operations. Conducts platoon reconnaissance missions.

Physical demands rating and qualifications for initial award of MOS. The bridge crewmember must possess the following qualifications:

(1) Physical Demands Rating: very heavy

(2) Physical Profile: 111121

(3) Normal color vision

(4) Minimum score of 90 in aptitude area CO.

(5) Formal training (completion of MOS 21C course conducted under auspices of U.S. Army Engineer School) mandatory.

(6) Must possess a valid state motor vehicle operator license.

MOS 21C had the alphanumeric designator of 12C prior to fiscal year 2004.

The major duties, physical demands, physical profile, and skill levels were obtained from Army Pamphlet 611-21.

MOS List for Corps of Engineers