This puzzle was inspired by the JTB & 295 interchange, which to me looks an awfully lot like a Quaternary celtic knot. It's probaby not one you would tatoo on your shoulder or anything, but you have to admit it's pretty cool. At least as far as interchange designs go.
Why did I include the Quaternary celtic knots in the image below? Does it even matter? Will it help you crack the code? Well, that is for you to figure out.
SINZVRGUCYJCOGW PBU YYLY CKETXEU RXY CHHV
AON G DYVXV RPTLYBFY LEZQ TYC SIOKHJ JEIC UHCHHVQ IE RXY CBTYRR
ZL VUCM M SRLZCLY I LEZQ NFR QHOMLVE CZNXYR
UYK FIEAU SON XFBK KFU NIFI KB CIYSE IM M NVLC MVZEK E YVNK
FQPE RSL QOEC Q VAVOXEOLLT WHXGB
GHZQ YM JNWK SICJUL TH QRXE KFU WIILVE EMCD GOKI ZZPICIMIOI
ZFNK RXCS YYE
BH YMM UBHYK NN RAJOAE LZAT WMH ZIGHZAG KFU WAVLV
VTJ GD UN HEB GRVC
QHD PEKPH PMKL SMIG OETYKME BXJ DUZRU MTXIG