Timing & traffic: I‑80 near Des Moines backs up around weekday rush hours (roughly 7–9 a.m. and 3:30–6 p.m.), especially at the I‑235 interchange. If you can, swing onto I‑235 to cut through town mid‑day; it’s often faster than staying on the beltline.

Speed enforcement & quirks: Speed limits drop quickly as you approach the metro area, and troopers often work the I‑80/I‑35 north junction and the east mixmaster near Altoona. Stay sharp for semi traffic weaving between the left “car” lanes and the right “truck” lanes—those lane splits change quickly in construction zones.

Weather gotchas: Sudden storms and strong crosswinds are common on the open stretches west and east of the city, especially spring and fall. In winter, black ice can form fast on bridges and ramps—watch the electronic DOT signs; they’re usually pretty accurate about slick spots ahead.

Fuel & food sweet spots: The truck stops and big plazas around exits 142–143 (Altoona) and 121 (Waukee) are usually your best bets for easy in‑and‑out fueling plus decent food. Locals often skip the chain fast food at the pumps and duck a block or two into town for better sit‑down spots.