OpenTTD Manual
Installation · Tutorial
FAQ · Game Interface
Railway Junctions
Junction Criteria
3-Way junctions
Basic 3-Way
Line Merge
Half Cloverleaf
Half Spaghetti
Compact 3-Way
Compact 3-Way B-M Junction
Ultimate 3-way
Half Transmogrified
Braided Junction
4-Way junctions
Basic 4-Way
Complex Star
High Speed 4-Way Fly-over∕under
Pre-Signaled Roundabout
Advanced Roundabout
Right-of-way Roundabout
Improved Roundabout
Deepblue2k8 4-way Junction
Enormous junctions
Multi-way/multi-track cloverleaves
Dual Tetrathorp
Dual Transmogrified
Dual Branch-Merge
Quad Branch-Merge
Quad Tetrathorp
6-tuple Branch-Merge
8-Way Star
High Speed 4-way
Other junctions
Building depots
Dual tunnels
Sideline U Turn
Right-of-way Lane Change
Priority Merge
Track Layouts
4-Way Triple Axial
4-Way Triple Axial 2
Triple Via Mini
High Hill
Unuseful junctions
3/4ths junction
Ultimate 3-way junction for 4 tracks

The Crossover-Junction is a small junction which can handle a medium amount of traffic. It can be simply built over a mainline without changing too much of it. Only four connections to the mainline are made and the other line stops. To fix this two bridges are built over the original mainline and connected to the other line. A little further two bridges over the new line are made and connected so trains can turn round if they make a wrong turn.

Fig.1 - Crossover-Junction

Pros: Cons:

Other Example Crossover-Junctions

Fig.2 - Crossover - Junction - On 3 Width Track

Fig.3 - Crossover Junction - Short tunnels and gentle turns