US Bridges

H1 Ramp Fo over H1 Ramp Fo

Fair

Honolulu County, Hawaii · H1 Ramp Fo · Structure no. 0032110314T0008

Built
1978
47 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
537 ft
10 main spans
Daily traffic
724
2018 count
Owner
State
State Highway Agency

About this bridge

H1 Ramp Fo over H1 Ramp Fo is a prestressed concrete box beam or girders - multiple carrying H1 Ramp Fo over H1 Ramp Fo in Honolulu County, Hawaii. It was built in 1978, so it is 47 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 724 vehicles a day, roughly 3% of them trucks, projected to reach 1,220 by 2038. The structure is 537 ft (163.8 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesH1 Ramp Fo
CrossesH1 Ramp Fo
LocationH1 Ramp Fo
CountyHonolulu County
StateHawaii
Coordinates21.33456, -157.92219
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length537 ft (163.8 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.6 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic724 (2018)
Projected traffic1,220 by 2038
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was H1 Ramp Fo over H1 Ramp Fo built?

It was built in 1978, making it 47 years old in 2025.

What condition is H1 Ramp Fo over H1 Ramp Fo 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 H1 Ramp Fo over H1 Ramp Fo carry?

About 724 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is H1 Ramp Fo over H1 Ramp Fo?

The structure is 537 ft (163.8 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns H1 Ramp Fo over H1 Ramp Fo?

It is owned by the State Highway Agency.