Interstate 25

Interstate 25 (I-25) is a controlled-access interstate highway in the southern Athens Federation that connects Athens and Novo-Arkhangelsk, the co-capitals of the country. It is the first interstate highway built in the Novo-Arkhangelsk metropolitan area. Construction of a northern leg of I-25 is currently under construction, and is expected to open soon. There is also plans for a southern leg south of Novo-Arkhangelsk, but this project has been paused.

Route
Interstate 25's central (and currently, only) leg goes from downtown Novo-Arkhangelsk to Interstate 420 just near the Pakistan Republic. I-25's southern terminus is at an intersection in northern downtown Novo-Arkhangelsk. Downtown can be seen very well southbound, ahead of the end of the freeway section. I-25 serves the northwestern side of the city, with its interchange with Commerce Street. After having an interchange with the road A-1, I-25 enters Arizona County, which the highway serves the cities of Little Tucson and Sand City. The highway serves Midway, Borderas, and even Lithuania Country via an interchange with A-12. Eventually, the highway has another interchange with Pakistan Expressway, which serves Pakistan County, and then ending at Interstate 420 shortly afterwards. I-420 will go on to mainly serve the city of Athens.

Northern Expansion
In February 2022, work began on a northward expansion of I-25. From the current northern terminus, the new route will follow I-420 Outer through eastern Athens and I-20 Eastbound across the Lake Technoblade Memorial Bridge. Southwest of Karlsholt is a trumpet interchange where I-25 breaks off from I-20 and continues northward. The interchange is finished, but the northern leg of I-25 has not yet opened for traffic. From there, I-25 will cross the northern Athens Sea and will pass through Eletia and Yuval Counties, eventually reaching the northern plains region. It will also provide a road connection to Lompton and possibly Lucasia.

Southern Expansion
A southward expansion of I-25 south of Novo-Arkhangelsk has been proposed. The southern leg of I-25 will pass under Novo-Arkhangelsk by a very long tunnel (the longest in the Athens Federation Interstate Highway System), and will continue south from there. This project is currently on pause.

Like all other interstate highways in the Athens Federation, I-25 uses sequential exit numbering.