US Bridges

Waihau St. over Waihau St/Waipio Chl #1

Fair

Honolulu County, Hawaii · TMK=9-5-09 · Structure no. 003955001100001

Built
1957
68 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
5,285
1987 count
Owner
County
County Highway Agency

About this bridge

Waihau St. over Waihau St/Waipio Chl #1 is a concrete continuous culvert carrying Waihau St. over Waihau St/Waipio Chl #1 in Honolulu County, Hawaii. It was built in 1957, so it is 68 years old, older 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 5,285 vehicles a day, projected to reach 6,606 by 2025. The structure is 21 ft (6.4 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWaihau St.
CrossesWaihau St/Waipio Chl #1
LocationTMK=9-5-09
RouteCity Street 0
CountyHonolulu County
StateHawaii
Coordinates21.46103, -158.02113
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating104.6 US tons
Inventory rating80.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width61 ft (18.6 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,285 (1987)
Projected traffic6,606 by 2025
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Waihau St. over Waihau St/Waipio Chl #1 built?

It was built in 1957, making it 68 years old in 2025.

What condition is Waihau St. over Waihau St/Waipio Chl #1 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 2023.

How much traffic does Waihau St. over Waihau St/Waipio Chl #1 carry?

About 5,285 vehicles per day (1987 count).

How long is Waihau St. over Waihau St/Waipio Chl #1?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 61 ft wide.

Who owns Waihau St. over Waihau St/Waipio Chl #1?

It is owned by the County Highway Agency.