US Bridges

Moanalua RD over Waimalu Strm

Fair

Honolulu County, Hawaii · 0.04MI W/Hekaha ST · Structure no. 003072001400159

Built
1965
60 years old, rebuilt 1970
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
63 ft
2 main spans
Daily traffic
43,100
2017 count
Owner
County
County Highway Agency

About this bridge

Moanalua RD over Waimalu Strm is a concrete continuous slab carrying Moanalua RD over Waimalu Strm in Honolulu County, Hawaii. It was built in 1965 and reconstructed in 1970, so it is 60 years old, younger 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.

It carries about 43,100 vehicles a day, projected to reach 32,713 by 2025. The structure is 63 ft (19.3 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMoanalua RD
CrossesWaimalu Strm
Location0.04MI W/Hekaha ST
RouteCity Street 7210
CountyHonolulu County
StateHawaii
Coordinates21.39067, -157.94803
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.9 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length63 ft (19.3 m)
Longest span31 ft (9.4 m)
Deck width80 ft (24.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,100 (2017)
Projected traffic32,713 by 2025
Trucks0%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Moanalua RD over Waimalu Strm built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1970.

What condition is Moanalua RD over Waimalu 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 August 2023.

How much traffic does Moanalua RD over Waimalu Strm carry?

About 43,100 vehicles per day (2017 count).

How long is Moanalua RD over Waimalu Strm?

The structure is 63 ft (19.3 m) long with a longest span of 31 ft (9.4 m) and a deck 80 ft wide.

Who owns Moanalua RD over Waimalu Strm?

It is owned by the County Highway Agency.