The whole sentence, as it appeared in the Daily Post (central S.F. Peninsula) on 6/11/15, p. 38, in “Juror complains protestor trial is a waste of time” by Angela Ruggiero:
(1) The sudden blockade caused traffic to snarl, as well as some injuries and accidents.
This has the V caused in construction with some sort of DO + VP complement traffic to snarl (a kind of “accusative + infinitive”, to use traditional terminology) and simultaneously in construction with a direct object, a coordinate NP some injuries and accidents. We start with the observation that this is a kind of coordination of unlike syntactic categories: whatever the syntactic category of DO + VP is, it’s not NP.
Now, despite what some usage handbooks would have you believe, coordinations of unlikes are far from generally barred — but some types are markedly odd, at least for many speakers (and in this case, I am one of them; for me, (1) is one type of what the Language Loggers came to call “WTF coordinations”, for the characteristic reaction some people have to them). (more…)