US Bridges

Kapiolani Blvd over Makiki Ditch

Fair

Honolulu County, Hawaii · 320E/KALAKAUA/KAP Blvd · Structure no. 003062021400052

Built
1931
94 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
39,349
2000 count
Owner
County
County Highway Agency

About this bridge

Kapiolani Blvd over Makiki Ditch is a concrete tee beam carrying Kapiolani Blvd over Makiki Ditch in Honolulu County, Hawaii. It was built in 1931, so it is 94 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 39,349 vehicles a day, projected to reach 49,186 by 2025. The structure is 40 ft (12.2 m) long and 100 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKapiolani Blvd
CrossesMakiki Ditch
Location320E/KALAKAUA/KAP Blvd
RouteCity Street 7503
CountyHonolulu County
StateHawaii
Coordinates21.29029, -157.83462
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 inspectionAugust 2024
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 alignment6: Equal to present minimum criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span37 ft (11.3 m)
Deck width100 ft (30.5 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,349 (2000)
Projected traffic49,186 by 2025
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$733,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kapiolani Blvd over Makiki Ditch built?

It was built in 1931, making it 94 years old in 2025.

What condition is Kapiolani Blvd over Makiki Ditch 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 2024.

How much traffic does Kapiolani Blvd over Makiki Ditch carry?

About 39,349 vehicles per day (2000 count).

How long is Kapiolani Blvd over Makiki Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.3 m) and a deck 100 ft wide.

Who owns Kapiolani Blvd over Makiki Ditch?

It is owned by the County Highway Agency.