US Bridges

Kam HWY over Waikakalaua Strm (o.B)

Fair

Honolulu County, Hawaii · 0.12MI N/Waiakalani ST · Structure no. 003000990301165

Built
1950
75 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
282 ft
3 main spans
Daily traffic
12,200
2019 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Waikakalaua Strm (o.B) is a concrete continuous tee beam carrying Kam HWY over Waikakalaua Strm (o.B) in Honolulu County, Hawaii. It was built in 1950, so it is 75 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 12,200 vehicles a day, roughly 3% of them trucks, projected to reach 27,805 by 2025. The structure is 282 ft (86 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKam HWY
CrossesWaikakalaua Strm (o.B)
Location0.12MI N/Waiakalani ST
RouteU.S. Route 99
CountyHonolulu County
StateHawaii
Coordinates21.46375, -158.02372
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38.9 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length282 ft (86 m)
Longest span106 ft (32.3 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,200 (2019)
Projected traffic27,805 by 2025
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Waikakalaua Strm (o.B) built?

It was built in 1950, making it 75 years old in 2025.

What condition is Kam HWY over Waikakalaua Strm (o.B) 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 February 2024.

How much traffic does Kam HWY over Waikakalaua Strm (o.B) carry?

About 12,200 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Kam HWY over Waikakalaua Strm (o.B)?

The structure is 282 ft (86 m) long with a longest span of 106 ft (32.3 m) and a deck 36 ft wide.

Who owns Kam HWY over Waikakalaua Strm (o.B)?

It is owned by the State Highway Agency.