It looks to be a peering problem between AboveNet and Verizon. What does the trace look like during the morning or daytime hours? That will be a reasonable indicaton of what is congested.
A trace from AboveNet's Looking Glass server in that region gives the following:
traceroute to 130.81.28.204 (130.81.28.204), 30 hops max, 40 byte packets 2 ge-10-2-1.er1.ord7.us.above.net (64.125.25.142) 1.139 ms 1.090 ms 1.414 ms 3 0.xe-9-3-0.BR3.CHI13.ALTER.NET (204.255.168.45) 1.083 ms 1.084 ms 1.083 ms 4 so-15-0-3-0.RES-BB-RTR1.verizon-gni.net (130.81.28.204) 28.105 ms 80.031 ms 48.157 ms