On November 3, 2016, FHWA delivered a memo to require load rating bridges that are on the Interstate System and within reasonable access to the Interstate System for Emergency Vehicles (EVs) as defined in Fixing America's Surface Transportation Act (FAST Act) (Pub. L.114-94). Since Texas allows EVs to operate legally on all bridges, all bridges in Texas must be evaluated for EVs. By definition, an emergency vehicle is used to transport personnel and equipment to respond to emergency situations such as fires and other hazardous conditions. The gross vehicle weight limit for emergency vehicles is 86,000 pounds. Two emergency vehicles were defined by FHWA, EV2 and EV3. Figure 6-3 shows the detailed load configurations for the 2 EV load rating models. Only bridges with inventory rating less than HS20 shall be load rated for EVs. When EV load ratings are performed, present them to the State in Operating Ratings factors. TxDOT has compiled a guide to the load rating of structures for EVs, available on the Bridge Division webpage.