Alongside the pan-European E-road numbers, which were given to routes of international importance, a complementing series of N-road numbers was devised to designate those routes not included in the European system, but considered of national significance.
[1] In 1976, the until then administrative only Rijksweg numbers were adopted as the new road denominations, along with a completely new series of N-numbers for Non motorway highways, in 1978.
The E-road system was significantly renumbered in 1985, but remains signposted everywhere in the Netherlands.
This is because the numbers leading up to 85 were used for the original Rijksstraatwegen and later the modern rijkswegen count.
Source:[3] N89 "The Wadden Sea Route", length: 200 km Amsterdam - Delfzijl (via Alkmaar, Leeuwarden and Groningen) N90 "The Frisia Route", length: 130 km Leeuwarden - Almelo (via Heerenveen and Zwolle) N91 "The Zuyderzee Route", length: 145 km Joure - Utrecht (via Lelystad and Hilversum) N92 "The Lower Saxony Route", length: 185 km Eemshaven - Enschede (via Emmen and Hardenberg) N93 "The Veluwe Route", length: 180 km Emmeloord - Tilburg (via Apeldoorn, Arnhem, Nijmegen and 's-Hertogenbosch) N94 "The Central Route", length: 220 km Hoorn - Valkenswaard (via Lelystad, Ede, Oss and Eindhoven) N95 "The Upper Meuse Route", length: 140 km Nijmegen - Maastricht (via Venlo and Heerlen) N96 "The Rhine Route", 110 km Maasvlakte - Enschede (two sections, separated by E31 ) N97 "The Lower Meuse Route", length: 135 km Renesse - 's-Hertogenbosch (via Zierikzee, Steenbergen and Moerdijk) N98 "The Delta Works Route", length: 160 km Europoort - Sas van Gent (via Renesse and Flushing) N99 "The North Sea Route", length: 235 km Wieringen - Antwerp (via Amsterdam, The Hague, Rotterdam and Bergen op Zoom) N100 "The IJ Route", length: 55 km (incomplete)[citation needed] Greater beltway around Amsterdam