US Bridges

Kam HWY over Kipapa Strm

Good

Honolulu County, Hawaii · 0.03MI S/Dairy RD · Structure no. 003000990301447

Built
1933
92 years old
Condition
Good
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
491 ft
16 main spans
Daily traffic
28,800
2019 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Kipapa Strm is a concrete continuous tee beam carrying Kam HWY over Kipapa Strm in Honolulu County, Hawaii. It was built in 1933, so it is 92 years old, older 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 28,800 vehicles a day, roughly 1% of them trucks, projected to reach 31,360 by 2025. The structure is 491 ft (149.8 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesKam HWY
CrossesKipapa Strm
Location0.03MI S/Dairy RD
RouteU.S. Route 99
StateHawaii
Coordinates21.42701, -158.01144
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans16
Design loadH 15
Structure length491 ft (149.8 m)
Longest span42 ft (12.8 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,800 (2019)
Projected traffic31,360 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Kipapa Strm built?

It was built in 1933, making it 92 years old in 2025.

What condition is Kam HWY over Kipapa Strm 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 February 2024.

How much traffic does Kam HWY over Kipapa Strm carry?

About 28,800 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Kam HWY over Kipapa Strm?

The structure is 491 ft (149.8 m) long with a longest span of 42 ft (12.8 m) and a deck 34 ft wide.

Who owns Kam HWY over Kipapa Strm?

It is owned by the State Highway Agency.