There were two cases of diesels locomotives going into the Napa River at Brazos bridge. The first case was in 1960,story was crew was playing cards instead of watching the track ahead and engines crashed right into the river. I can remember hearing about the incident on radio news as a 6 year old at the time. My Dad, a former SP employee added the rest. Second incident was in 1984 and there were pictures of the actual incident posted on trains magazine. About 6 miles east of the bridge is Lombard, a major junction and switching area with lines going north to Napa and south to Vallejo. The crew uncoupled the front two engines and tied them down and made a run with the third engine in the consist up to Kaiser steel in Napa. While they were gone the brakes failed? on the two tied down engines and they rolled by gravity all the way to the open bridge. There are a total of four drawbridge's in a distance of 20 miles on this line and three of them were left open to river traffic at all times. The utility person would follow the train in his vehicle and close each bridge long enough for the train to cross. One of the bridges had to be accessed by rowboat. A rail fan was following the train that day taking pictures at each bridge as it passed. yes, he was all set up at Brazos when the two runaway engines appeared and went into the river with a big slash. SP borrowed a crane and barge from Santa FE, pulled the engines out of the salt water, put them on a barge and floated them all the way to the Richmond terminal where they were put back on the rails again. I have a newspaper photo of the two SP engines floating through Vallejo on the Napa River heading to Richmond. Not sure if the two engines made it back into service again.