US Bridges

Farr HWY over Nanakuli Strm

Fair

Honolulu County, Hawaii · 0.07MI W/Laumania Ave · Structure no. 003000930300481

Built
1947
78 years old, rebuilt 1970
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
82 ft
2 main spans
Daily traffic
33,900
2017 count
Owner
State
State Highway Agency

About this bridge

Farr HWY over Nanakuli Strm is a concrete continuous tee beam carrying Farr HWY over Nanakuli Strm in Honolulu County, Hawaii. It was built in 1947 and reconstructed in 1970, so it is 78 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 5 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 33,900 vehicles a day, roughly 3% of them trucks, projected to reach 54,170 by 2025. The structure is 82 ft (25 m) long and 59 ft wide.

CarriesFarr HWY
CrossesNanakuli Strm
Location0.07MI W/Laumania Ave
RouteU.S. Route 93
StateHawaii
Coordinates21.37586, -158.13984
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length82 ft (25 m)
Longest span40 ft (12.2 m)
Deck width59 ft (18 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,900 (2017)
Projected traffic54,170 by 2025
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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$749,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Farr HWY over Nanakuli Strm built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1970.

What condition is Farr HWY over Nanakuli Strm 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 April 2024.

How much traffic does Farr HWY over Nanakuli Strm carry?

About 33,900 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Farr HWY over Nanakuli Strm?

The structure is 82 ft (25 m) long with a longest span of 40 ft (12.2 m) and a deck 59 ft wide.

Who owns Farr HWY over Nanakuli Strm?

It is owned by the State Highway Agency.