US Bridges

Ala Wai Blvd over Ala Wai Canal

Fair

Honolulu County, Hawaii · _ · Structure no. 003228001100001

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
291 ft
1 main span
Daily traffic
1,000
2020 count
Owner
County
County Highway Agency

About this bridge

Ala Wai Blvd over Ala Wai Canal is a concrete slab carrying Ala Wai Blvd over Ala Wai Canal in Honolulu County, Hawaii. It was built in 1959, so it is 66 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 5 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 1,000 vehicles a day, projected to reach 1,400 by 2037. The structure is 291 ft (88.7 m) long and 39 ft wide.

Location

Open in Google Maps
CarriesAla Wai Blvd
CrossesAla Wai Canal
Location_
RouteCity Street 7613
CountyHonolulu County
StateHawaii
Coordinates21.28861, -157.83333
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length291 ft (88.7 m)
Longest span291 ft (88.7 m)
Deck width39 ft (11.9 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,400 by 2037
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 Ala Wai Blvd over Ala Wai Canal built?

It was built in 1959, making it 66 years old in 2025.

What condition is Ala Wai Blvd over Ala Wai Canal 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 September 2024.

How much traffic does Ala Wai Blvd over Ala Wai Canal carry?

About 1,000 vehicles per day (2020 count).

How long is Ala Wai Blvd over Ala Wai Canal?

The structure is 291 ft (88.7 m) long with a longest span of 291 ft (88.7 m) and a deck 39 ft wide.

Who owns Ala Wai Blvd over Ala Wai Canal?

It is owned by the County Highway Agency.