US Bridges

Waipahu ST over FAI-H1(WAIAWA Ic #12)

Fair

Honolulu County, Hawaii · 1.41MI E/Managers DR · Structure no. 003000H11100817

Built
1968
57 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
335 ft
4 main spans
Daily traffic
20,000
2007 count
Owner
State
State Highway Agency

About this bridge

Waipahu ST over FAI-H1(WAIAWA Ic #12) is a concrete continuous box beam or girders - multiple carrying Waipahu ST over FAI-H1(WAIAWA Ic #12) in Honolulu County, Hawaii. It was built in 1968, so it is 57 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 20,000 vehicles a day, projected to reach 25,000 by 2025. The structure is 335 ft (102.1 m) long and 39 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesWaipahu ST
CrossesFAI-H1(WAIAWA Ic #12)
Location1.41MI E/Managers DR
RouteCounty Highway 0
CountyHonolulu County
StateHawaii
Coordinates21.39795, -157.99364
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating26.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length335 ft (102.1 m)
Longest span100 ft (30.5 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2007)
Projected traffic25,000 by 2025
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

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$1.6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Waipahu ST over FAI-H1(WAIAWA Ic #12) built?

It was built in 1968, making it 57 years old in 2025.

What condition is Waipahu ST over FAI-H1(WAIAWA Ic #12) 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 November 2024.

How much traffic does Waipahu ST over FAI-H1(WAIAWA Ic #12) carry?

About 20,000 vehicles per day (2007 count).

How long is Waipahu ST over FAI-H1(WAIAWA Ic #12)?

The structure is 335 ft (102.1 m) long with a longest span of 100 ft (30.5 m) and a deck 39 ft wide.

Who owns Waipahu ST over FAI-H1(WAIAWA Ic #12)?

It is owned by the State Highway Agency.