US Bridges

Hana HWY over Waikani Strm

FairPosted for load

Maui County, Hawaii · 0.33MI E/Wailua Vlly Lo R · Structure no. 009003600501942

Built
1926
99 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete Continuous
Length
106 ft
1 main span
Daily traffic
1,800
2017 count
Owner
State
State Highway Agency

About this bridge

Hana HWY over Waikani Strm is a concrete continuous arch - deck carrying Hana HWY over Waikani Strm in Maui County, Hawaii. It was built in 1926, so it is 99 years old, older than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 1,800 vehicles a day, roughly 1% of them trucks, projected to reach 1,754 by 2025. The structure is 106 ft (32.2 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesHana HWY
CrossesWaikani Strm
Location0.33MI E/Wailua Vlly Lo R
RouteU.S. Route 360
CountyMaui County
StateHawaii
Coordinates20.83278, -156.13859
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length106 ft (32.2 m)
Longest span83 ft (25.3 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2017)
Projected traffic1,754 by 2025
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$4.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Hana HWY over Waikani Strm built?

It was built in 1926, making it 99 years old in 2025.

What condition is Hana HWY over Waikani Strm in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Hana HWY over Waikani Strm carry?

About 1,800 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Hana HWY over Waikani Strm?

The structure is 106 ft (32.2 m) long with a longest span of 83 ft (25.3 m) and a deck 20 ft wide.

Who owns Hana HWY over Waikani Strm?

It is owned by the State Highway Agency.