US Bridges

Farr HWY over Keaau Strm

Good

Honolulu County, Hawaii · 0.60MI N/Makaha Br #3B · Structure no. 003009300500070

Built
1995
30 years old
Condition
Good
inspected April 2024
Type
Slab
Prestressed Concrete
Length
123 ft
4 main spans
Daily traffic
1,300
2017 count
Owner
State
State Highway Agency

About this bridge

Farr HWY over Keaau Strm is a prestressed concrete slab carrying Farr HWY over Keaau Strm in Honolulu County, Hawaii. It was built in 1995, so it is 30 years old, younger 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 1,300 vehicles a day, roughly 4% of them trucks, projected to reach 3,360 by 2025. The structure is 123 ft (37.5 m) long and 42 ft wide.

CarriesFarr HWY
CrossesKeaau Strm
Location0.60MI N/Makaha Br #3B
RouteU.S. Route 93
StateHawaii
Coordinates21.50539, -158.22922
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.8 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length123 ft (37.5 m)
Longest span31 ft (9.4 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2017)
Projected traffic3,360 by 2025
Trucks4%
Lanes on structure2
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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Farr HWY over Keaau Strm built?

It was built in 1995, making it 30 years old in 2025.

What condition is Farr HWY over Keaau 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 April 2024.

How much traffic does Farr HWY over Keaau Strm carry?

About 1,300 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Farr HWY over Keaau Strm?

The structure is 123 ft (37.5 m) long with a longest span of 31 ft (9.4 m) and a deck 42 ft wide.

Who owns Farr HWY over Keaau Strm?

It is owned by the State Highway Agency.