Package -II of Delhi–Meerut expressway is a part of is India’s widest, 96km long, access-controlled expressway. This package has a total length of 19 km and involves construction of fourteen lane wide highway and bridges. The project is on Hybrid Annuity mode.  The project comprises of two major bridges over river Hindon & Hindon cut canal, one minor bridge, a flyover at intersection with NH-91 (at Lal Kuan, Ghaziabad), one ROB, 13 vehicular underpasses, 5 light vehicular underpasses and 5 foot over bridges.

There is an existing ROB at ch 20+515 having 60^o skew to the expressway alignment. Existing ROB has overall width of 23m. To provide additional lanes of expressway, new bridges are constructed on left and right sides of existing ROB. Existing ROB has been retained to facilitate 2 lanes each for Up & Down traffic of DME. An additional extension span to existing ROB is provided towards Delhi side for provision of future track, which increases the length of existing ROB by 20m.

Due to several restrictions on placement of foundations for new structures within Railway Boundary, three long span (i.e. 115m, 74m & 66m) superstructures have been designed in addition to 4 other (short) spans. The main highlight of this ROB is a 115m long, 20m wide through type steel truss with RCC deck slab. Fabrication of steel truss is currently in progress. The other spans are 74m & 66m long steel-concrete composite plate girder superstructures with 10m and 30m wide deck, respectively. Traffic over steel-concrete composite plate girder spans is plying. All spans are simply supported.

The substructure of the ROB consists of RCC portal frames with multiple circular columns of 1700mm diameter connected with RCC portal beam of 1500mm depth at top and RCC long rectangular pile cap at bottom. The foundation comprises of 1000mm dia. 21m long bored cast-in-situ piles. Spherical bearings are provided to transfer vertical and lateral loads from superstructure to substructure and foundation. The earth fills behind the abutment piers is retained by independent system of RS wall.

CREDITS:

Client               : National Highways Authority of India

Contractor       : APCO Infratech Pvt Ltd.

Consultant                   : B&S Engineering Consultants Pvt. Ltd.