US Bridges

Alawiki St. over Drainage Ditch

FairPosted for load

Honolulu County, Hawaii · TMK:4-7-065 Bryan 36E2 · Structure no. 003401601100001

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
800
2009 count
Owner
County
County Highway Agency

About this bridge

Alawiki St. over Drainage Ditch is a concrete culvert carrying Alawiki St. over Drainage Ditch in Honolulu County, Hawaii. It was built in 1980, so it is 45 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. Its operating status is: posted for load restriction.

It carries about 800 vehicles a day, projected to reach 1,000 by 2029. The structure is 20 ft (6.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesAlawiki St.
CrossesDrainage Ditch
LocationTMK:4-7-065 Bryan 36E2
RouteCity Street 0
CountyHonolulu County
StateHawaii
Coordinates21.44268, -157.83508
Functional classRural 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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width43 ft (13.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2009)
Projected traffic1,000 by 2029
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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$231,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Alawiki St. over Drainage Ditch built?

It was built in 1980, making it 45 years old in 2025.

What condition is Alawiki St. over Drainage 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 December 2023.

How much traffic does Alawiki St. over Drainage Ditch carry?

About 800 vehicles per day (2009 count).

How long is Alawiki St. over Drainage Ditch?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m) and a deck 43 ft wide.

Who owns Alawiki St. over Drainage Ditch?

It is owned by the County Highway Agency.