Complex sentence: East of the interchange, I-595 is 10 lanes wide; beyond the Maryland Route 704 (MD 704) interchange, it narrows to eight lanes, with the innermost two being HOV lanes.
Split into simpler sentences: East of the interchange, I-595 is 10 lanes wide. Beyond the MD 704 interchange, it narrows to eight lanes, with the innermost two lanes being HOV lanes.