"Budget focus on infrastructure sees increase in allocation to most schemes; high execution targets is credit positive," it said.
It said the Central government has retained its focus on infrastructure development by increasing allocation towards the sector with focus on key segments like roads, railways, metro and irrigation.
"This, along with, promotion of affordable housing segment by granting the infrastructure status to such projects, will help the construction sector in further enhancing order inflows," it said.
There is a significant increase in allocation towards Pradhan Mantri Awas Yojna (PMAY), which was enhanced 45 per cent, it said.
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Allocation to Swachh Bharat Mission was increased by 44 per cent while Pradhan Mantri Krishi Sinchai Yojana saw an increase of 28 per cent, it added.
Icra said another major beneficiary was Metro projects which saw its allocation increase by 80 per cent over FY17 budgetary allocation.
However, increased budgetary support and limited dependence on Internal and Extra Budgetary Resources (IEBR) will provide the railways greater flexibility for future capex, it said.
The Budget has increased allocation for the Ministry of Railways (MoR) by 22 per cent over FY17 and the dependence on IEBR has been kept at the same level as the last fiscal.
"As a result, the total capital outlay for Railways in FY 2018 is budgeted to increase by 8 per cent to Rs 131,000 crore over both FY 2017 Budget Estimates (BE) and Revised Estimates (RE)," it said.