Interstate 595 (Maryland)
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| John Hanson Highway | |||||||
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| Route information | |||||||
| Auxiliary route of I-95 | |||||||
| Maintained by MDSHA | |||||||
| Length: | 19.97 mi (32.14 km) | ||||||
| Major junctions | |||||||
| West end: |
   I-95 / I-495 / US 50 near New Carrollton
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 US 301 in Bowie I-97 near Annapolis
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| East end: |
  US 50 / US 301 / MD 2 / MD 70 in Annapolis |
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| Location | |||||||
| Counties: | Prince George's, Anne Arundel | ||||||
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Interstate 595 (I-595) is an unsigned number for a section of the John Hanson Highway (US 50 and US 301) from I-495 (Capital Beltway) east of Washington, D.C., to Route 70 (Rowe Boulevard) at Annapolis, Maryland.
US 50/I-595 has a high-occupancy vehicle lane (HOV) in each direction from west of the Beltway to east of US 301, a distance of 8 miles (13 km). Unlike other HOV lanes in the Washington metropolitan area, which are only restricted during rush hours, the HOV lanes on I-595 are restricted at all times.
At 19.97 miles (32.14 km) long, I-595 is the longest unsigned stretch of Interstate Highway in the entire Interstate system. This Interstate was left unsigned because most motorists were already familiar with US 50 and US 301.
The existing US 50 freeway east from the Baltimore-Washington Parkway converts into I-595 within the Capital Beltway interchange. 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.
The frequency of the interchanges decreases as the development backs away from the highway, and US 50 passes over or under several routes before interchanging with MD 197 near Bowie, using a partial cloverleaf interchange. The highway approaches a residential development as it soon after interchanges with the next major route: US 301 and MD 3. Within this interchange, US 301 joins the freeway, creating a three-route concurrency, and the highway exits development again, traveling through mostly woodland.
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