Number of Lanes
Current engineering guidance from American
Association of State Highway and Transportation
Officials
Recommends:
2 lane roadways
3 lane roadways (example Lower Spenard)
5 lane roadways (example Tudor, Muldoon)
No longer recommends:
 4 lane roadways without a median -- due to safety
concerns
   Bottom line -- new roads will have 3-lane, 4-lane divided, or
5-lane configurations