Cross Drainage Structures
Cross drainage is provided whenever streams have to cross the roadway facility. The water from the side drains is also often taken across these structures to divert the water away from the road to a water course or a valley. Cross drainage structures are those structures which are provided whenever streams have to cross the roadway facility. The water from the side drains is also often taken across these structures in order to divert the water away from the road to a water course or a valley. Some of the Cross Drainage Structures are:
Culverts
A closed conduit placed under the embankment to carry water across the roadway is termed as culverts. culverts are the bridging structures of linear waterway span less than about 6m. It is extensively used in road drainage system. In fact, more than 75% of the cross-drainage structures are culverts. A culvert is more hydraulically efficient than minor bridge and discharge through a culvert is more than a minor bridge.
Bridge
A bridge is a structure constructed over water course to carry traffic over it. bridges are the structures having linear waterway span more than about 6m. On the basis of construction materials • Steel bridges • Concrete bridges • Timber bridges, etc. On the basis of structural point of view • Cantilever bridges • Suspension bridges • Moving bridges, etc.
| S/No | Intervention Type | Name of Roads | Length |
|---|---|---|---|
| 1 | Cross Drainage Structures | Tambuwal Kebbe Main Road – Zabarma – Kaurare | 8 |
| 2 | Cross Drainage Structures | Kaffe – Yargarmawa – Alibawa – Safiyal | 8 |
| 3 | Cross Drainage Structures | Wauru – Sagera – Sabon Garin Kadadin Buda – Kadadin Buda – Rafin Duma | 12 |
| 4 | Cross Drainage Structures | Darna Tsolawo Junction-Dan Kado-Gidan Badarne | 8 |
| 5 | Cross Drainage Structures | Rimawa – Geyyu – Bulunbukut – Dubo Sarkin Fawa – Mullela | 16 |
| 6 | Cross Drainage Structures | Ranganda – Gidan Bawa Tsohuwa – Gidan Bawa Sabuwa – Ihi | 8 |
| 7 | Cross Drainage Structures | Illela Main Road – Karma Tsohuwa | 8 |
| 8 | Cross Drainage Structures | Rabah Main Road – Kurya | 16 |
| 9 | Cross Drainage Structures | Rabah – Anganba – Argentina Farm – Tabanni | 16 |