US Bridges

Moanalua RD over Kam HWY Aiea Ic #2

Fair

Honolulu County, Hawaii · 0.25MI E/Mcgrew Loop · Structure no. 003000780400001

Built
1966
59 years old
Condition
Fair
inspected February 2023
Type
Girder and Floorbeam System
Steel
Length
1,028 ft
10 main spans
Daily traffic
—
2017 count
Owner
State
State Highway Agency

About this bridge

Moanalua RD over Kam HWY Aiea Ic #2 is a steel girder and floorbeam system carrying Moanalua RD over Kam HWY Aiea Ic #2 in Honolulu County, Hawaii. It was built in 1966, so it is 59 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.

No traffic count is recorded. The structure is 1,028 ft (313.4 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMoanalua RD
CrossesKam HWY Aiea Ic #2
Location0.25MI E/Mcgrew Loop
RouteU.S. Route 78
CountyHonolulu County
StateHawaii
Coordinates21.37639, -157.934
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating57 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans10 (+12 approach)
Design loadHS 20
Structure length1,028 ft (313.4 m)
Longest span78 ft (23.8 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic44,528 by 2025
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$4.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Moanalua RD over Kam HWY Aiea Ic #2 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Moanalua RD over Kam HWY Aiea Ic #2 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 February 2023.

How much traffic does Moanalua RD over Kam HWY Aiea Ic #2 carry?

No traffic count is recorded for this structure.

How long is Moanalua RD over Kam HWY Aiea Ic #2?

The structure is 1,028 ft (313.4 m) long with a longest span of 78 ft (23.8 m) and a deck 34 ft wide.

Who owns Moanalua RD over Kam HWY Aiea Ic #2?

It is owned by the State Highway Agency.