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Old Mamalahoa Hwy over Honomu Stream

Hawaii County, Hawaii · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Old Mamalahoa Hwy over Honomu Stream in Hawaii County, Hawaii, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1935 and reconstructed in 2002, making it 90 years old at the 2025 inventory.
It carries about 500 vehicles a day (traffic count year 2000).
Its listed owner is the county highway agency.
It is one of 100 of the 231 inventoried bridges in Hawaii County rated good (43.3%); 8 (3.5%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous concrete multiple box beam
Length	about 94 ft
Location	Tmk: 2-8-013:003
NBI structure number	001280001100002
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Hawaii department of transportation.

Bridge	Built	Vehicles/day	Condition
Hawaii Belt Rd over Panaewa Strm	1950	35,200	Fair
Keeau-pahoa Hwy over Waipahoehoe Strm	1968	26,700	Good
Route 11 over Unmd Glh	1984	25,900	Good
Route 11 over Unmd Glh	1984	25,400	Good
Hi Blt Rd Palani R over Unmd Glh Tpl Mtl Culvt	1984	25,400	Good
Route 11 over Unmd Glh	1984	25,400	Good