US Bridges

Hana HWY over Piinaau Strm

FairPosted for load

Maui County, Hawaii · 0.04MI E/Keanae Hmstd RD · Structure no. 009003600501662

Built
1916
109 years old, rebuilt 1940
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
1,800
2017 count
Owner
State
State Highway Agency

About this bridge

Hana HWY over Piinaau Strm is a concrete tee beam carrying Hana HWY over Piinaau Strm in Maui County, Hawaii. It was built in 1916 and reconstructed in 1940, so it is 109 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 28 ft (8.6 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesHana HWY
CrossesPiinaau Strm
Location0.04MI E/Keanae Hmstd RD
RouteU.S. Route 360
CountyMaui County
StateHawaii
Coordinates20.85833, -156.14792
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating16.1 US tons
Inventory rating12.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.6 m)
Longest span27 ft (8.2 m)
Deck width23 ft (7 m)
Roadway width19 ft (5.9 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$1.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Hana HWY over Piinaau Strm built?

It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1940.

What condition is Hana HWY over Piinaau 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 Piinaau Strm carry?

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

How long is Hana HWY over Piinaau Strm?

The structure is 28 ft (8.6 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.

Who owns Hana HWY over Piinaau Strm?

It is owned by the State Highway Agency.