By far the longest mileage of a single interstate in any one state in the country is I-10 as it runs across Texas. El Paso is closer to Santa Monica than it is to Orange, Texas (and Orange is closer to Jacksonville than it is to El Paso). But – within 20 miles either way – what number is on the easternmost I-10 mile marker in Texas? (Hint: it’s also the signed route number of the Nimitz Freeway between San Jose and Oakland.)
880