Defender makes fresh start at Upton Park
The 30-year-old full-back has found himself down the pecking order at Eastlands after the summer arrival of Alexander Kolarov, but could make his Hammers debut against Arsenal at the weekend.
Bridge will bring experience to a defence that has shipped 38 goals in the Premier League already this season, having made 289 league appearances, as well as receiving 36 England caps before announcing his international retirement in 2009.
The left-back has already spoken of his delight at completing the move, stating that he is focussed on helping the club maintain their Premier League status.
"I am delighted to sign for West Ham United," Bridge told West Ham’s official website.
"I am just looking forward to meeting everyone at the training ground, starting work and getting out on the pitch and playing in front of the fans. I am glad the loan is sorted and I'm ready to play.
"It will be great to play a part in helping keep West Ham in the Premier League - it would be a big achievement."
Bridge was in the stands as West Ham secured a first leg win in Tuesday’s League Cup semi final with Birmingham City and revealed that his familiarity with a number of the club’s staff and players helped him make the move.
"I know a few of the players from England and I know the physio. I spoke to Scotty Parker and a few people and they told me what a great club it is. That definitely helped me make the decision to come here.
"There is a lot of quality here and I know we can move up the table. The first half on Tuesday was great. There should have been a few more goals and then the team came back with ten men. If we can play like that every week we'll be fine."