US Bridges

Kam HWY over Kii Ditch

Good

Honolulu County, Hawaii · 0.35MI W/Hospital RD · Structure no. 003000830301523

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
8,600
2017 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Kii Ditch is a prestressed concrete slab carrying Kam HWY over Kii Ditch in Honolulu County, Hawaii. It was built in 2005, so it is 20 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,600 vehicles a day, roughly 5% of them trucks, projected to reach 7,670 by 2025. The structure is 87 ft (26.5 m) long and 56 ft wide.

CarriesKam HWY
CrossesKii Ditch
Location0.35MI W/Hospital RD
RouteU.S. Route 83
StateHawaii
Coordinates21.68045, -157.95649
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating46 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span84 ft (25.5 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,600 (2017)
Projected traffic7,670 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$339,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Kii Ditch built?

It was built in 2005, making it 20 years old in 2025.

What condition is Kam HWY over Kii Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Kam HWY over Kii Ditch carry?

About 8,600 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Kam HWY over Kii Ditch?

The structure is 87 ft (26.5 m) long with a longest span of 84 ft (25.5 m) and a deck 56 ft wide.

Who owns Kam HWY over Kii Ditch?

It is owned by the State Highway Agency.