US Bridges

Ramp Iw-A over Paiea ST RAMPS/H1

Fair

Honolulu County, Hawaii · Above Paiea ST Hon Hi · Structure no. 003H1WB1146A019

Built
1977
48 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
1,645 ft
16 main spans
Daily traffic
32,200
2017 count
Owner
State
State Highway Agency

About this bridge

Ramp Iw-A over Paiea ST RAMPS/H1 is a concrete continuous box beam or girders - multiple carrying Ramp Iw-A over Paiea ST RAMPS/H1 in Honolulu County, Hawaii. It was built in 1977, so it is 48 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 32,200 vehicles a day, roughly 4% of them trucks, projected to reach 32,200 by 2037. The structure is 1,645 ft (501.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRamp Iw-A
CrossesPaiea ST RAMPS/H1
LocationAbove Paiea ST Hon Hi
RouteInterstate 0H1
CountyHonolulu County
StateHawaii
Coordinates21.33336, -157.91317
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans16
Design loadUnknown
Structure length1,645 ft (501.4 m)
Longest span125 ft (38.1 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,200 (2017)
Projected traffic32,200 by 2037
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp Iw-A over Paiea ST RAMPS/H1 built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ramp Iw-A over Paiea ST RAMPS/H1 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 October 2024.

How much traffic does Ramp Iw-A over Paiea ST RAMPS/H1 carry?

About 32,200 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Ramp Iw-A over Paiea ST RAMPS/H1?

The structure is 1,645 ft (501.4 m) long with a longest span of 125 ft (38.1 m) and a deck 31 ft wide.

Who owns Ramp Iw-A over Paiea ST RAMPS/H1?

It is owned by the State Highway Agency.