US Bridges

Farr HWY over Kaiahi Strm(makua)dbl B

Poor

Honolulu County, Hawaii · 0.83MI N/Makaha Br #5A · Structure no. 003009300500221

Built
1964
61 years old
Condition
Poor
inspected April 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,300
2017 count
Owner
State
State Highway Agency

About this bridge

Farr HWY over Kaiahi Strm(makua)dbl B is a concrete continuous culvert carrying Farr HWY over Kaiahi Strm(makua)dbl B in Honolulu County, Hawaii. It was built in 1964, so it is 61 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 4 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 1,300 vehicles a day, roughly 3% of them trucks, projected to reach 54,170 by 2025. The structure is 22 ft (6.7 m) long and 38 ft wide.

CarriesFarr HWY
CrossesKaiahi Strm(makua)dbl B
Location0.83MI N/Makaha Br #5A
RouteU.S. Route 93
StateHawaii
Coordinates21.52705, -158.22766
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2017)
Projected traffic54,170 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Farr HWY over Kaiahi Strm(makua)dbl B built?

It was built in 1964, making it 61 years old in 2025.

What condition is Farr HWY over Kaiahi Strm(makua)dbl B 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 Kaiahi Strm(makua)dbl B carry?

About 1,300 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Farr HWY over Kaiahi Strm(makua)dbl B?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns Farr HWY over Kaiahi Strm(makua)dbl B?

It is owned by the State Highway Agency.