US Bridges

Farr HWY over Nanaikapono Strm

Poor

Honolulu County, Hawaii · 0.29MI Nw/Nanakuli Ave · Structure no. 003000930400536

Built
1969
56 years old
Condition
Poor
inspected April 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
24,200
2017 count
Owner
State
State Highway Agency

About this bridge

Farr HWY over Nanaikapono Strm is a concrete continuous culvert carrying Farr HWY over Nanaikapono Strm in Honolulu County, Hawaii. It was built in 1969, so it is 56 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 24,200 vehicles a day, roughly 6% of them trucks, projected to reach 46,916 by 2025. The structure is 27 ft (8.2 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFarr HWY
CrossesNanaikapono Strm
Location0.29MI Nw/Nanakuli Ave
RouteU.S. Route 93
StateHawaii
Coordinates21.38156, -158.14562
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width59 ft (18 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,200 (2017)
Projected traffic46,916 by 2025
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$327,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Farr HWY over Nanaikapono Strm built?

It was built in 1969, making it 56 years old in 2025.

What condition is Farr HWY over Nanaikapono Strm in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Farr HWY over Nanaikapono Strm carry?

About 24,200 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is Farr HWY over Nanaikapono Strm?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m) and a deck 59 ft wide.

Who owns Farr HWY over Nanaikapono Strm?

It is owned by the State Highway Agency.