The annexation of the peninsula in 2014 was condemned by Kiev and the West as an illegal land grab but applauded in Russian Federation.
"I welcome the formal decision of the EU Council to impose sanctions against five individuals responsible for the unlawful conduct of the presidential elections in the temporarily occupied Crimea and Sevastopol", - he wrote.
Meanwhile, Ukraine's security service raided the offices of Russian state media in Kiev and detained one journalist, moves the chief editor of Russia's RT television suggested were linked to the bridge opening.
Built at a cost of 223 billion roubles ($3.60 billion), the bridge is set to be the longest dual-purpose span in Europe. "Many didn't believe these plans were possible", Kremlin spokesman told reporters on Tuesday ahead of the ceremony.
Putin is known to drive automobiles himself from time to time during working trips about the country.
"This is an extremely important day from this point of view and in a practical sense and in symbolic terms".
The Russian president said on Tuesday he was confident people would love the bridge, which will be open to traffic tomorrow.
The four-lane road bridge is opening ahead of schedule as it was due to be completed in December. He was hit with sanctions by the United States for his proximity to Putin and by the European Union for being among those accused of undermining Ukraine's territorial integrity.
In celebration, Russian authorities organized pop concerts at both ends of the bridge, events that recalled the massive pro-Kremlin celebrations held in Simferopol and Moscow in 2014 after the invasion and start of the Russian occupation of Crimea.