meets Greenwood Drive at a cloverleaf interchange and SR 239 (Victory Boulevard) at a diamond interchange where the Interstate expands to six lanes. The Interstate Highway begins an unsigned concurrency with U.S. Route 460 Alternate (US 460 Alt.) at a partial interchange with SR 337 (Portsmouth Boulevard), which allows access between I-264 toward Chesapeake and SR 337 toward Norfolk and between SR 337 toward Chesapeake and I-264 toward Norfolk. I-264 continues east through a partial cloverleaf interchange with US 17 (Frederick Boulevard). A partial junction with Des Moines Avenue allowed access to and from the west, but, since November 2013, access to Des Moines Avenue has been permanently closed for construction of the Martin Luther King Freeway interchange. (, traffic can still reach westbound I-264 from this junction, but that is expected to close later in the year.) I-264's final interchange in Portsmouth provides access to SR 141 (Effingham Street) in downtown Portsmouth; westbound I-264 traffic has ramps to and from Bart Street. This interchange, which also serves the Norfolk Naval Shipyard, is where the Interstate reduces to four lanes and descends into the Downtown Tunnel under the Southern Branch Elizabeth River. I-264 surfaces in the city of Norfolk and immediately has an interchange with I-464, which heads south toward Chesapeake. The I-464 interchange also provides access to Berkley Avenue in the Berkley section of Norfolk. I-264 curves north as an eight-lane highway that crosses the Eastern Branch Elizabeth River on a drawbridge. At the north end of the drawbridge, the two directions of the Interstate temporarily split and have a series of ramps to Waterside Drive, St. Paul's Boulevard, City Hall Avenue, and Tidewater Drive at the eastern end of Downtown Norfolk. These streets provide access to Harbor Park, a baseball stadium that is home to the Norfolk Tides, and the Norfolk station for Amtrak service to routes along the northern I-95 corridor. I-264 continues east as an eight-lane freeway between the Eastern Branch Elizabeth River to the south and Hampton Roads Transit's Tide Light Rail tracks to the north. The Interstate has an interchange with US 460, SR 166, and SR 168, which head northwest toward Downtown Norfolk as Brambleton Avenue and south across the river as Campostella Road. There is no access between Brambleton Avenue and I-264 toward downtown. East of US 460, the freeway passes to the south of Norfolk State University and has a diamond