US Bridges

Kal HWY over Wawamalu Stream

Fair

Honolulu County, Hawaii · 0.96MI E/Makapuu Lt Hs RD · Structure no. 003074001400083

Built
1941
84 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
70 ft
1 main span
Daily traffic
10,000
2017 count
Owner
State
State Highway Agency

About this bridge

Kal HWY over Wawamalu Stream is a concrete continuous tee beam carrying Kal HWY over Wawamalu Stream in Honolulu County, Hawaii. It was built in 1941, so it is 84 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 10,000 vehicles a day, roughly 4% of them trucks, projected to reach 11,340 by 2025. The structure is 70 ft (21.3 m) long and 52 ft wide.

Location

Open in Google Maps
CarriesKal HWY
CrossesWawamalu Stream
Location0.96MI E/Makapuu Lt Hs RD
RouteU.S. Route 72
CountyHonolulu County
StateHawaii
Coordinates21.29371, -157.66166
Functional classUrban Other Principal Arterial

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating23.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length70 ft (21.3 m)
Longest span50 ft (15.2 m)
Deck width52 ft (15.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2017)
Projected traffic11,340 by 2025
Trucks4%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kal HWY over Wawamalu Stream built?

It was built in 1941, making it 84 years old in 2025.

What condition is Kal HWY over Wawamalu Stream 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 September 2024.

How much traffic does Kal HWY over Wawamalu Stream carry?

About 10,000 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Kal HWY over Wawamalu Stream?

The structure is 70 ft (21.3 m) long with a longest span of 50 ft (15.2 m) and a deck 52 ft wide.

Who owns Kal HWY over Wawamalu Stream?

It is owned by the State Highway Agency.