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Cabagan–Santa Maria Bridge

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Coordinates: 17°27′02.7″N 121°44′54.2″E / 17.450750°N 121.748389°E / 17.450750; 121.748389
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Cabagan–Santa Maria Bridge
Bridge in 2022
Coordinates17°27′02.7″N 121°44′54.2″E / 17.450750°N 121.748389°E / 17.450750; 121.748389
CarriedVehicular traffic
CrossedCagayan River
LocaleCabagan and Santa Maria, Isabela
DPWH ID numberB03236LZ[1]
Preceded byCansan–Bagutari Bridge
Followed byBuntun Bridge
Characteristics
DesignTied-arch bridge
Total length990 m (3,250 ft)
No. of spans12 arch spans and 9 PSCG spans
History
Construction startNovember 2014
Construction cost₱1.225 billion
InauguratedFebruary 1, 2025
CollapsedFebruary 27, 2025; 54 days ago (2025-02-27)
Location
Map

The Cabagan–Santa Maria Bridge is a partially collapsed bridge crossing the Cagayan River connecting the municipalities of Cabagan and Santa Maria in Isabela, Philippines.

History

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Background and proposal

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The municipalities of Cabagan and Santa Maria in Isabela province has been linked by an overflowing concrete bridge.[2][3] The old structure is usually rendered impassible during heavy rains.[4][5][6]

The project was started during the administration of President Benigno Aquino III. Albert Cañete, an engineer specializing on bridges, proposed the design of what would become the Cabagan–Santa Maria Bridge to Department of Public Works and Highways (DPWH) secretary Rogelio Singson in 2012.[7]

Construction

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The bridge in 2018

The construction of the Cabagan–Santa Maria Bridge beside the old structure began on November 2014.[7][8][9] The bridge's "aesthetic design" is meant to fulfill the structure's role as a landmark. It also intended to replace an older concrete bridge.[2] Bridge engineer Cañete and United Technology Consolidated Partnership (UTCP) were behind the bridge’s structural design.[10][11][12]

The Cabagan-Santa Maria bridge was planned to be completed by 2019 but was finished in 2021.[8] The bridge was then promoted to be part of President Rodrigo Duterte's Build! Build! Build! infrastructure program.[7] Structural defects were detected within the year.[8] Light vehicles and bicycles are allowed to use it in times of emergencies such as flooding which submerges the old bridge.[13]

In 2023, the DPWH awarded R.D. Interior Junior Construction the implement the final retrofitting of the bridge.[4] The bridge was then formally completed on February 1, 2025. The bridge cost ₱ 1.225 billion (Philippine pesos) to build.[5][14]

Collapse

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Bridge collapse in February 27, 2025.

On February 27, the third span from Cabagan side of the bridge collapsed after a 102-ton truck attempted to cross it. The incident injured six people.[4][15][16][17] President Bongbong Marcos himself and DPWH officials inspected the site a week after the incident. Marcos attributed the "design flaw" as the cause of the collapse and that the budget for the bridge was reduced from ₱1.8 billion.[18] The engineer behind the bridge, Cañete insists that the accident was due to an overloading problem[19] stating that the bridge is a tied-arch bridge and not a suspension bridge "without cables" as described by Marcos.[8]

After the collapse the UTCP and Cañete's background of being the same structural designers of the Ungka flyover in Iloilo came to light, which was closed two weeks after its opening due to complaints about structural defects that made the bridge unsafe.[20] However the DPWH issued a statement dissuading the public from comparing the two road structures stating that they have different circumstances.[21]

Specification

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The newer Cabagan–Santa Maria Bridge is 990 meters (3,250 ft) long with twelve arch spans measuring 60 meters (200 ft) each; and nine pre-stressed concrete girder spans. The approaches are 664.1 linear meters (2,179 ft) long.[5][22]

References

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  1. ^ "Contract Agreement" (PDF). Department of Public Works and Highways, R.D. Interior Junior Construction. March 24, 2023. Retrieved February 28, 2025.
  2. ^ a b "DPWH: Landmark Bridge in Isabela underway". Department of Public Works and Highways. January 17, 2018. Archived from the original on January 24, 2018. Retrieved February 28, 2025.
  3. ^ "Isabela 1st". National Roads and Bridges Inventory. Department of Public Works and Highways. October 16, 2024. Retrieved February 28, 2025.
  4. ^ a b c Magadia, Carl; Dawang, Jasper (February 28, 2025). "Ping Lacson calls for accountability over collapsed Isabela Bridge". Daily Tribune. Retrieved February 28, 2025.
  5. ^ a b c Dizon, David (February 28, 2025). "Collapsed Cabagan-Santa Maria bridge just opened Feb 2025, cost P1.2-B - DPWH". ABS-CBN News. Retrieved February 28, 2025.
  6. ^ Nicolas, Jino (January 17, 2018). "Bridge across Cagayan River set for completion by 2019". BusinessWorld. Retrieved March 1, 2025.
  7. ^ a b c "So, who designed the collapsed Cabagan-Sta. Maria bridge in Isabela?". Rappler. March 8, 2025. Retrieved March 10, 2025.
  8. ^ a b c d "6 hurt as newly repaired bridge in Isabela collapses". The Manila Times. February 28, 2025. Retrieved February 28, 2025.
  9. ^ Escosio, Jan (February 28, 2025). "Bong Revilla: Heads must roll over Isabela bridge collapse". Philippine Daily Inquirer. Retrieved February 28, 2025.
  10. ^ De Castro, Isagani (March 9, 2025). "So, who designed the collapsed Cabagan-Sta. Maria bridge in Isabela?". Rappler. Retrieved March 10, 2025.{{cite news}}: CS1 maint: url-status (link)
  11. ^ "DPWH looks into Isabela bridge's design as possible cause for collapse". GMA News Online. March 4, 2025. Retrieved March 4, 2025.{{cite news}}: CS1 maint: url-status (link)
  12. ^ Conejos, Jaff (March 6, 2025). "DPWH chief names firm, engineer behind design of collapsed Isabela bridge". Daily Tribune. Retrieved March 6, 2025.{{cite news}}: CS1 maint: url-status (link)
  13. ^ Visaya, Villamor Jr. (February 28, 2025). "4 cars fall into river as newly retrofitted bridge in Isabela collapses". Philippine Daily Inquirer. Retrieved February 28, 2025.
  14. ^ Patinio, Ferdinand (February 28, 2025). "DPWH: Assessment underway on cause of Isabela bridge collapse". Philippine Daily Inquirer. Retrieved February 28, 2025.
  15. ^ Dawang, Jasper (February 28, 2025). "Newly completed Cabagan-Sta. Maria Bridge partially collapses under overloaded truck". Daily Tribune. Retrieved February 28, 2025.
  16. ^ "Newly retrofitted bridge collapses in the Philippines, damaging 4 vehicles". The Straits Times. February 28, 2025. Retrieved February 28, 2025.
  17. ^ "Isabela bridge collapse: Marcos orders probe, says heads will roll". The Philippine Star. March 1, 2025. Retrieved March 1, 2025.
  18. ^ "PBBM: Designers responsible for fallen Isabela bridge". Presidential Communications Office. March 6, 2025. Retrieved March 6, 2025.{{cite web}}: CS1 maint: url-status (link)
  19. ^ Eksklusibong panayam kay Engr. Cañete tungkol sa gumuhong tulay sa Isabela. News5Everywhere - Frontline Express (TV broadcast) (in Filipino). March 7, 2025. Retrieved March 10, 2025 – via YouTube.{{cite AV media}}: CS1 maint: url-status (link)
  20. ^ Conejos, Jaff (March 6, 2025). "DPWH chief names firm, engineer behind design of collapsed Isabela bridge". Daily Tribune. Retrieved March 6, 2025.
  21. ^ Lozada, Chris Jan Hechanova (March 4, 2025). "DPWH: Stop Comparing Ungka Flyover to Collapsed Isabela Bridge". Bombo Radyo Iloilo. Retrieved March 10, 2025.
  22. ^ Untalan, Sherylin (February 28, 2025). "DPWH investigating partial collapse of P1.2-billion bridge in Isabela". GMA News. Retrieved February 28, 2025.
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