Bridge conditions in Maui County, Hawaii
187 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
13 of the 187 bridges the federal inventory lists in Maui County are rated poor; the rest split 66 good and 108 fair.
- 13 of the 187 bridges in Maui County, Hawaii, are rated in poor condition (7.0%) in the 2025 National Bridge Inventory, as of .
- 66 bridges (35.3%) are rated good and 108 (57.8%) fair.
- The median Maui County bridge was built in 1954.
- The busiest poor-rated bridge is Lahaina Bypass over Punakea Street (built 2017), carrying about 16,500 vehicles a day.
Good 35.3% · Fair 57.8% · Poor 7.0% of 187 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Lahaina Bypass over Punakea Street | 2017 | 16,500 | Poor |
| Hana Hwy over Nailiilihaele Strm | 1930 | 1,800 | Poor |
| Hana Hwy over Kaaiea Strm | 1928 | 1,800 | Poor |
| Hana Hwy over Punalau Strm(kolea) | 1911 | 1,800 | Poor |
| Hana Hwy over Heleleikeoha Strm | 1917 | 1,800 | Poor |
| Hana Hwy over Waikakoi Strm | 1911 | 775 | Poor |
| Hana Hwy over Kapia Strm | 1915 | 775 | Poor |
| Haiku Rd over Pauwela Gulch | 1911 | 700 | Poor |
| Hana Hwy over Alaalaula Strm | 1915 | 649 | Poor |
| Hana Hwy over Unnamed Strm | 1910 | 450 | Poor |
| Hana Hwy over Honolewa Strm | 1911 | 450 | Poor |
| Piilani Hwy over Poopoo Strm | 1997 | 245 | Poor |
| Hana Hwy over Kaapahu Strm | 1983 | 245 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Piilani Hwy over Waiakoa Gulch | 2007 | 42,400 | Fair |
| Piilani Hwy over Waiakoa Gulch | 1980 | 42,400 | Fair |
| Piilani Hwy over Kulanihakoi Gulch | 1980 | 42,400 | Fair |
| Piilani Hwy over Waipuilani Gulch Br | 1980 | 42,400 | Fair |
| S Kihei Rd over Kulanihakoa Ditch | 2015 | 42,400 | Good |
| Hoanoapiilani Hwy over Diversion Ditch | 2010 | 41,357 | Good |
| Hana Hwy over Kalialinui Strm | 1944 | 37,400 | Fair |
| Piilani Hwy over Keokea Gulch Br | 1980 | 36,400 | Fair |
| Honoapiilani Hwy over Kahoma Strm | 1988 | 35,100 | Good |
| Route 311 over Pulehu Stream | 2005 | 34,300 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Hawaii: Hawaii bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.