Road and Bridge Statistics
The information under the category of road statistics include tables of current inventory and condition of national roads and bridges summarized nationwide by region and by district engineering offices, lists of all national roads and bridges sections, figures showing the locations, and graphs of data comparison.
The road and bridge data are taken from the DPWH databank called the Road and Bridge Information Application (RBIA) being managed by the Planning Service. RBIA contains all the inventory and condition data of national roads and bridges. Inventory data are updated continuously while condition data are collected annually by the District Engineering Offices and reviewed/validated and stored by the Regional Offices in the RBIA thru computer network. DPWH has established certain manuals, guidelines and inspection procedures for the conduct of inventory and visual condition surveys, defect evaluation, and analysis. The national road in Autonomous Region for Muslim Mindanao (ARMM) is not included in the RBIA database because it is not clear if the management of national road in the ARMM is within the administrative jurisdiction and mandate of DPWH.
Table 1.1a is a summary of national road lengths nationwide, while Road Statistics consists of per region and district summary. The tables were designed so that required information for national roads are made available. The rows contained in the Road Classification are Arterial Road (include N-S-North-South Backbone, E-W-East-West Lateral and Other Road of Strategic Importance) and Secondary National Road. It includes road surface type which are Paved (Asphalt and Concrete) and Unpaved (Gravel and Earth); and visual road condition (Good, Fair, Poor, Bad and No Assessment). Items which indicated as “No Assessment” means the road is still under construction/rehabilitation which cannot be assessed during the period or the road is within the major urban cities where the inspection procedures are not adoptable but will be considered in the future.
These are important information utilized by the Pavement Management System (PMS), using the HDM-4 software, in the analysis to determine the road work requirements and formulate programs for road network development and asset preservation.
Table 1.2a presents the Regional Annual Length of National Roads from 2007 to 2010 on a year to year basis. On this spreadsheet, National Roads are classified into primary arterial and secondary arterial and further categorized into: North-South Backbone, East-West Lateral, Other Roads of Strategic Importance and National Secondary Roads as established through Republic Act No. 917, known as the Philippine Highway Act, enacted in 1953 and Executive Order 113, series of 1955. It is a regional detail on the increase/decrease on the length of the national road system.
A brief description of the National Road Network in the Philippines is further explained in graphical presentation of the Road Functional Classification, Surface Type, Paved and Unpaved Roads and Road Condition in percentages.
Tables 1.4a and 1.4b contains the summary of the length and number of bridges in each region and district, respectively. The tables indicate the general type of construction: Concrete, Steel, Bailey or Timber; and condition: Good, Fair, Poor or Bad. There are some bridges that are not assessed since the procedure does not include special bridges, flyovers, footbridges and those under rehabilitation or construction but these bridges will be considered in the future. So far, there are about 8,024 bridges located along our national roads for a total length of 345,056 linear meters.
Table 1.4d shows the list of all existing national bridges in the country indicating the bridge name and identification, the name of road system, the regional and district engineering offices where they belong, the general type of bridge and the lengths in unit of meters. This table is presented in 108 pages.
Table 1.4e includes a table and a write-up on Comparative Bridge Analysis for the year 2009 and 2010. It is a comparison on the change in the length and number under temporary and permanent national bridges on a two-year period citing the difference on a regional basis.
The Nationwide Comparative Analysis of National Bridges is a four-year comparison on the length and number of bridges indicating the difference between a two-year period signifying an increase that can be attributed to upgrading of bridges from temporary to permanent, retrofitting through strengthening or rehabilitation, replacement of existing deteriorated bridges and by means of local roads up-classified or converted into national roads by (1) administrative process in which the DPWH issue a Department Order (DO) as mandated under EO 124 series of 1987, and (2) legislative process in which the road is converted by the enactment of a law thru Republic Act (RA).
Table 1.3b is a List of Local Roads Converted into National Roads for CY 2010 where a total of 40 roads were qualified and approved to be converted into a national road 37 local roads were reclassified through Republic Acts and three (3) local roads passed the technical requirements of the DPWH. The aggregated length of converted roads summed up to 927.427 km. broken down into 804.641 km. of roads approved through R.A. and 122.606 km. passed by the DPWH criteria.
Bridge Location Map shows the location of all national bridges in each region in GIS generated maps indicating the name of bridge, road network and administrative divisions. Figure 1.8 is a graph comparing the length of bridges by type in each region.
For problems or questions regarding this Web site contact