construction on the first 1.5-mile (2.5 km) section, from canal street to 22nd street, was started on may 24, 1929, and the road was officially opened on november 13, 1930, with some inaugural vehicles using the highway as early as october 28. traffic was not permitted on the structure until november 17 due to unanticipated delays in cosmetic work. a speed limit of 35 miles per hour (55 km/h) was set by police commissioner edward mulrooney, and trucks were temporarily banned. on the first sunday the road was in operation, the northbound roadway was backed up for a mile approaching the north end at 23rd street. the northbound offramp at 23rd street, unlike the temporary southbound onramp, was built as a permanent single lane ramp, since in the future most traffic would continue along the not-yet-finished elevated highway. suggested fixes included a new temporary ramp to 25th street and conversion of the temporary southbound onramp to two-way traffic. the second sunday the road was open, rain cut down on the traffic, but police had orders to open the permanent ramp eventually intended for a northbound onramp to exiting northbound traffic if traffic conditions warranted.