Birches West Roundabout
| Structure No | 40112 |
| Structure Name | Birches West Roundabout |
| Last PI Date | 15-Jun-2011 |
| Next PI Date +/- 6 Month | 24-May-2016 |
| Last GI Date | 15-Mar-2013 |
| Next GI Due +/- 6 Month | 15-Mar-2013 |
| Route | M1 |
| X | 294577 |
| Y | 360207 |
| Spanning | M1 |
| Orientation | S-N |
| Skew | 15.00 |
| Span Length | 52.60 |
| Structure Type | 4 Span continuous, simply support at Abutments |
| Joint Type | Asphaltic Plug |
| Parapet | Metal Painted |
| Construction Year | 1968 |
| HA_Rating | 40 |
| HB_Rating | 45 |