US Bridges

Lanikuhana Avenue over Waiahole Ditch

Good

Honolulu County, Hawaii · TMK=9-5-41 · Structure no. 003994001100001

Built
1987
38 years old
Condition
Good
inspected November 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
2,000
2009 count
Owner
County
County Highway Agency

About this bridge

Lanikuhana Avenue over Waiahole Ditch is a prestressed concrete slab carrying Lanikuhana Avenue over Waiahole Ditch in Honolulu County, Hawaii. It was built in 1987, so it is 38 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 2,000 vehicles a day, projected to reach 2,558 by 2029. The structure is 25 ft (7.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLanikuhana Avenue
CrossesWaiahole Ditch
LocationTMK=9-5-41
RouteCity Street 7042
CountyHonolulu County
StateHawaii
Coordinates21.44917, -158.02772
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.8 US tons
Inventory rating54.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length25 ft (7.7 m)
Longest span23 ft (7.1 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2009)
Projected traffic2,558 by 2029
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$289,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lanikuhana Avenue over Waiahole Ditch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Lanikuhana Avenue over Waiahole 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 November 2023.

How much traffic does Lanikuhana Avenue over Waiahole Ditch carry?

About 2,000 vehicles per day (2009 count).

How long is Lanikuhana Avenue over Waiahole Ditch?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7.1 m) and a deck 56 ft wide.

Who owns Lanikuhana Avenue over Waiahole Ditch?

It is owned by the County Highway Agency.