Minimum Pavement Thickness and Width Standards

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DPWH DEPARTMENT ORDER NO. 22, S. 2011: Minimum Pavement Thickness and Width Standards

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Title Supreme Court: Minimum Pavement Thickness and Width Standards

Law: Dpwh Department Order No. 22, S. 2011

Decision Date: Apr 8, 2011

DPWH Department Order No. 22 mandates a minimum pavement thickness of 280 mm for new national road constructions and a minimum carriageway width of 6.70 meters to enhance road durability and safety.

minimum pavement

pavement thickness

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Pavement Thickness Requirements for Asphalt Pavement

Minimum overlay thickness for asphalt pavements is 50 mm.
Thicker overlays (more than 50 mm) may be used only if the total cost is less than that of a 230 mm thick PCCP, considering economic efficiency.

Pavement Thickness Verification

All pavement thickness requirements shall be verified using pavement design analysis following the AASHTO method, as outlined in DPWH Design Guidelines, Criteria and Standards.
Design consideration must include the latest Annual Average Daily Traffic (AADT) and axle loading data.

Pavement Width Requirements

Minimum carriageway width in new road construction is 6.70 meters.
For rehabilitation or upgrading works of at least 500 meters in length, the minimum carriageway width is also 6.70 meters.
The widening for rehabilitation/upgrading must not require acquisition of additional right-of-way.

Implementation and Effectivity

The guidelines are designed to align with DPWH’s objective for upgrading national road design standards.
They aim to prevent premature pavement deterioration caused by uncontrolled vehicle overloading.
The Department Order took effect immediately upon issuance on April 8, 2011.
Annex A, which is referenced for the CESAL calculation procedure, is available at the Office of the National Administrative Register.

END