Lowering Oil Price Speculation for Infrastructure Dedicated to Economic Development Act of 2009 or the LOPSIDED Oil Prices Act of 2009 - Amends the Internal Revenue Code to: (1) impose an excise tax on transactions in oil futures and options, to be paid by the trading facility on which the transactions occur or the buyer of the transactions; (2) require withholding of such tax; and (3) deposit revenues from the tax into the Highway Trust Fund. Exempts from such tax certain commercial oil traders and bona fide hedging transactions.