US Bridges

Farr HWY over Kaukonahua Strm

Good

Honolulu County, Hawaii · 0.02MI S/Naluahi ST · Structure no. 003009300501748

Built
1940
85 years old
Condition
Good
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
110 ft
2 main spans
Daily traffic
9,100
2017 count
Owner
State
State Highway Agency

About this bridge

Farr HWY over Kaukonahua Strm is a concrete continuous tee beam carrying Farr HWY over Kaukonahua Strm in Honolulu County, Hawaii. It was built in 1940, so it is 85 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 9,100 vehicles a day, roughly 4% of them trucks, projected to reach 8,388 by 2025. The structure is 110 ft (33.5 m) long and 37 ft wide.

CarriesFarr HWY
CrossesKaukonahua Strm
Location0.02MI S/Naluahi ST
RouteU.S. Route 930
StateHawaii
Coordinates21.56527, -158.1203
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span55 ft (16.8 m)
Deck width37 ft (11.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2017)
Projected traffic8,388 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

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$771,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Farr HWY over Kaukonahua Strm built?

It was built in 1940, making it 85 years old in 2025.

What condition is Farr HWY over Kaukonahua 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 May 2024.

How much traffic does Farr HWY over Kaukonahua Strm carry?

About 9,100 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Farr HWY over Kaukonahua Strm?

The structure is 110 ft (33.5 m) long with a longest span of 55 ft (16.8 m) and a deck 37 ft wide.

Who owns Farr HWY over Kaukonahua Strm?

It is owned by the State Highway Agency.