No, there is only one bridge to relationship with God, the person of Jesus. This makes sense for a number of reasons. First, how many ways must God provide? Only one. What better way is there to pay for our sins? There is none.
Jesus said, "I am the way, the truth and the life. No one comes to the Father except through me." John 14:6
Speaking of Jesus the Bible says, "Salvation is found in no-one else, for there is no other name under heaven given to men by which we must be saved." Acts 4:12
Another reason there is only one way to relationship with God is because of the meaning of "grace". Grace is God's favor expressed to people who do not deserve that favor. In fact, we deserve to not receive God's favor. All other efforts to find relationship with God are really the calculated effort of people trying to make up for their own sin. In fact, religion can be spelled "D-O." Examine the religions of the world and see the common denominator of relationship based upon our own efforts. If I will work hard enough and long enough, then God will take pity on me and he won't punish me when I die.
There are three inherent problems with working our way to God's favor. First, how will I know if I have worked hard enough to make up for my sin? We can never be sure of God's favor no matter how hard we work.
Second, God has already told us that salvation is not achieved by working for it.
For it is by grace you have been saved, through faith--and this not from yourselves, it is the gift of God--not by works, so that no one can boast. Ephesians 2:8,9
Not only is it not possible to know we have worked enough, we already have God's word that we can't come to him on the basis of performance.
Third, what if we did receive forgiveness based upon our efforts to please God. What happens when I sin? I'm back in the same boat, not knowing how much I will have to do to make up for my sin. This is a hopeless cycle of despair.
How much more sense God's plan makes! He, through Jesus Christ, provides payment for our sin. We can spell Christianity "D-O-N-E". Jesus has already accomplished everything that is necessary for us to be forgiven and to be accepted by God. Why pursue the false claims of religious systems and personal philosophies that are doomed to failure from the start?
Place full faith in the person and work of Jesus Christ and you will find relationship with God.