US Bridges

FAI-H1 over Waimalu Via-Strm/Hwy

Fair

Honolulu County, Hawaii · 0.95MI E/Kam HWY · Structure no. 003000H10201125

Built
1970
55 years old, rebuilt 2006
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,251 ft
12 main spans
Daily traffic
244,000
2019 count
Owner
State
State Highway Agency

About this bridge

FAI-H1 over Waimalu Via-Strm/Hwy is a prestressed concrete stringer/multi-beam or girder carrying FAI-H1 over Waimalu Via-Strm/Hwy in Honolulu County, Hawaii. It was built in 1970 and reconstructed in 2006, so it is 55 years old, younger 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 6 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 244,000 vehicles a day, roughly 3% of them trucks, projected to reach 239,857 by 2025. The structure is 1,251 ft (381.2 m) long and 168 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAI-H1
CrossesWaimalu Via-Strm/Hwy
Location0.95MI E/Kam HWY
RouteInterstate 0H1
CountyHonolulu County
StateHawaii
Coordinates21.39079, -157.94693
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length1,251 ft (381.2 m)
Longest span105 ft (32 m)
Deck width168 ft (51.2 m)
Roadway width161 ft (49.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic244,000 (2019)
Projected traffic239,857 by 2025
Trucks3%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$19.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAI-H1 over Waimalu Via-Strm/Hwy built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2006.

What condition is FAI-H1 over Waimalu Via-Strm/Hwy 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 February 2024.

How much traffic does FAI-H1 over Waimalu Via-Strm/Hwy carry?

About 244,000 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is FAI-H1 over Waimalu Via-Strm/Hwy?

The structure is 1,251 ft (381.2 m) long with a longest span of 105 ft (32 m) and a deck 168 ft wide.

Who owns FAI-H1 over Waimalu Via-Strm/Hwy?

It is owned by the State Highway Agency.