Making the Bridge from Episode 2. With Easy To follow Instructions. Meybee.

-The Setup-
Create a 448x968x16 inch thick brush. This is where you are trying to get.

Texture it with concrete/bridge_concrete_world.
The texture scale should be X: 1 Y: 1.

Create a prop_static.
Give it a world model of: models/seesawbridge/bridge_static_exit.mdl
Set Start Fade Dist/Pixels to 0.
Set End Fade Dist/Pixels to 0.
Change the Pitch Yaw Roll to 0 270 0.

Create a prop_dynamic.
Give it a world model of: models/seesawbridge/standinMainBridge.mdl
Name: phys_bridge
Disable Shadows: Yes
Pitch Yaw Roll: 0 270 0
Default Animation: Idle

Create a second prop_dynamic. This will be the railing that stays.
Give it a world model of: models/seesawbridge/bridgeMetalNonDynamic.mdl
Position it accordingly to your bridge base.

Add a prop_physics. Give it a name of bridge_car
Start Fade Distance: 2400
End Fade Distance: 2600
Mass Scale: 1.0
Give it a model of:
models/props_vehicles/car002b_physics.mdl
Create 7 more, so you have 8 total. Use the following models:
models/props_vehicles/car005a_physics.mdl
models/props_vehicles/car004b_physics.mdl
models/props_vehicles/car004a_physics.mdl
models/props_vehicles/car005a_physics.mdl
models/props_vehicles/car002b_physics.mdl
models/props_vehicles/car004b_physics.mdl
(One of the cars is a duplicate.)

Put four of them on one end, and 3 on the other, with one in the middle. Make 

sure the 3 on the side that you are coming from are close to the edge so atlesat 

one or two fall off the edge.

Create a prop_dynamic.
Name: phys_bridge_side2
Disable Shadows: Yes
World Model: models/seesawbridge/standinsecondarybridge.mdl
Default Animation: idle
Pitch Yaw Roll: 0 270 0
Position Accordingly.

Create a prop_dynamic.
Name: phys_bridge_rubble
Disable Shadows: Yes
World Model: models/seesawbridge/rubble.mdl
Default Animation: idle
Pitch Yaw Roll: 0 270 0
Position Accordingly.

Create a prop_dynamic.
Name: phys_bridge1
Disable Shadows: Yes
World Model: models/seesawbridge/bridge_static.mdl
Pitch Yaw Roll: 0 270 0
Position Accordingly.

Create a 432x1648x16 brush. Texture the top with concrete/bridge_concrete_world.
Align up bridge models and peices like so. In-game you are forced to jump ontop 

of the red truck to get up to the heightend state.

Place a prop_static.
Set the World Model to: models/props_vehicles/truck002a_cab.mdl
Start Fade Dist/Pixels: 3400
End Fade Dist/Pixels: 3600

Rotate it a bit, etc.