Prioritizing bridges to repair based on risk

Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform of method of determining a risk associated with not repairing a bridge, the method comprising:

• generating a bridge-condition risk factor for the bridge based on an average structural condition of bridge elements, wherein the bridge-condition risk factor is based on a weighted combination of bridge element conditions, wherein the greater of an average superstructure condition or an average substructure condition is given more weight than an average deck condition, an average special elements condition, and an average other element condition, and wherein the greater of the average superstructure condition and the average substructure condition is adjusted if the bridge is designated as fracture critical;
• generating a probability-of-failure factor for the bridge based on the bridge-condition risk factor for the bridge;
• generating a consequence-of-failure factor for the bridge based at least on an importance of a route of which the bridge is a part, a detour length required should the bridge be closed, and a replacement cost of the bridge;
• generating an overall risk factor for the bridge that is a product of multiplying the consequence-of-failure factor for the bridge and the probability-of-failure factor for the bridge;
• and
• storing the overall risk factor for the bridge in a data store.

Computer-readable media having computer-executable instructions embodied thereon that, when executed, cause a computing device to perform a method of determining a bridge-condition risk factor for a bridge, the method comprising:

• generating an average superstructure condition by averaging a condition score for each superstructure element of the bridge;
• generating an average deck condition by averaging a condition score for each deck element of the bridge;
• generating an average other element condition for other elements by averaging a condition score for each other element in the bridge;
• generating an average special-element condition by averaging a condition score for each special element of the bridge;
• and
• adding the average special-element condition, the average other element condition, the average deck condition with the larger of the average superstructure condition and the average substructure condition to arrive at the bridge-condition risk factor for the bridge.