Scour Critical Bridges in Hawaii

83 bridges in Hawaii at risk from water erosion around foundations.

Scour Critical Bridges

Scour is the erosion of soil and rock around a bridge's foundation caused by moving water. When foundations are exposed or undermined, a bridge can collapse even if its deck and superstructure are in good condition. Scour is the leading cause of bridge failures in the US. These 83 bridges in Hawaii have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
DRAINAGE DITCH	Hawaii	Scour Critical — Countermeasures Ineffective	Fair	2014	100
MANOA PALOLO STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1967	112,200
MANOA PALOLO STRM(KING)	Hawaii	Scour Critical — Countermeasures Installed	Fair	1948	112,200
KEANANOIO STRM (O.B)	Hawaii	Scour Critical — Countermeasures Installed	Fair	1967	33,900
KALIHI STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1957	33,000
KALIHI STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1957	33,000
WAILUA RIVER	Hawaii	Scour Critical — Countermeasures Installed	Poor	1945	31,600
WAILUA RIVER	Hawaii	Scour Critical — Countermeasures Installed	Fair	1920	31,600
WEOWEOPILAU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1937	28,400
UKUMEHAME STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1950	27,400
WAIPAHOEHOE STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1968	26,700
HULEIA STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1989	26,700
KALIHI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1933	25,033
MANOA PALOLO STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1953	21,400
LAWAI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1934	20,600
MANOA-PALOLO STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1950	18,917
MOANALUA STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1961	17,692
KAALAEA STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1923	16,500
WAILUKU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1950	15,600
KALIHI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1927	14,551
WAIOLANI STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1934	14,427
WAIKAPU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1937	14,200
NUUANU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1934	13,883
KAPUE STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1950	13,600
MALIKO STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1961	13,300
MANOA PALOLO STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1937	12,921
ANAHULU STRM	Hawaii	Scour Critical — Countermeasures Installed	Poor	1921	12,850
HAKIPUU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1922	12,800
WAIMEA STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1930	12,700
KAWAILOA STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1929	12,700
LAUHULU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1937	12,700
KAELEPULU STREAM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1925	12,657
WAIOLANI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1931	12,302
PAUMALU STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1930	12,100
UP POAMOHO STRM-BRODIE 2	Hawaii	Scour Critical — Countermeasures Installed	Good	1937	11,800
WAIALUA TWN A (HELEMANO)	Hawaii	Scour Critical — Countermeasures Installed	Fair	1928	11,600
OPAELUA WAIALUA TWN B	Hawaii	Scour Critical — Countermeasures Installed	Fair	1928	11,600
WAIMEA RIVER	Hawaii	Scour Critical — Countermeasures Installed	Fair	1940	11,300
MAKAUA STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1927	11,100
N PUNALUU STRM	Hawaii	Scour Critical — Countermeasures Installed	Poor	1926	11,100
KAIEIE STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1967	10,400
KOLOA STRM-LAIEMALOO	Hawaii	Scour Critical — Countermeasures Installed	Fair	1933	10,200
PAHEEHEE STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1950	10,000
HANAWI STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1968	10,000
KALAOA STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1967	10,000
KAMANAIKI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1938	9,470
KAUKONAHUA STRM	Hawaii	Scour Critical — Countermeasures Installed	Good	1940	9,100
PUKELE STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1928	8,680
FARR HWY/HONOULIULI STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1939	7,587
WAIKAUMALO STRM	Hawaii	Scour Critical — Countermeasures Installed	Fair	1952	6,700

Scour Critical Rating Codes

Code 2 — Unaddressed	Bridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures Installed	Protective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures Ineffective	Protective measures were installed but have been assessed as ineffective. The bridge requires re-evaluation and additional action.

About Scour Critical Bridges

Scour critical bridges have been identified through underwater inspection or analysis as having foundations that are unstable or could become unstable during flood conditions. FHWA requires action plans for all scour critical bridges. Famous scour failures include the 1987 Schoharie Creek Bridge collapse in New York.

All Bridges Poor Condition Historic Bridges Bridge Stats