US Bridges

Haleakala Highway over Haiku Ditch

Good

Maui County, Hawaii · 1.73MI E of Hana Highway · Structure no. 009000370600169

Built
2007
18 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
33,100
2019 count
Owner
State
State Highway Agency

About this bridge

Haleakala Highway over Haiku Ditch is a prestressed concrete slab carrying Haleakala Highway over Haiku Ditch in Maui County, Hawaii. It was built in 2007, so it is 18 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 33,100 vehicles a day, projected to reach 41,000 by 2039. The structure is 41 ft (12.5 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesHaleakala Highway
CrossesHaiku Ditch
Location1.73MI E of Hana Highway
RouteU.S. Route 37
CountyMaui County
StateHawaii
Coordinates20.87746, -156.40227
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating80.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span28 ft (8.5 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,100 (2019)
Projected traffic41,000 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Haleakala Highway over Haiku Ditch built?

It was built in 2007, making it 18 years old in 2025.

What condition is Haleakala Highway over Haiku Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Haleakala Highway over Haiku Ditch carry?

About 33,100 vehicles per day (2019 count).

How long is Haleakala Highway over Haiku Ditch?

The structure is 41 ft (12.5 m) long with a longest span of 28 ft (8.5 m) and a deck 41 ft wide.

Who owns Haleakala Highway over Haiku Ditch?

It is owned by the State Highway Agency.