US Bridges

Ramp C over Waiawa Ic Struct #2

Fair

Honolulu County, Hawaii · 1.44MI E/Beg Divided HWY · Structure no. 003000991201785

Built
1969
56 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
260 ft
3 main spans
Daily traffic
59,100
2017 count
Owner
State
State Highway Agency

About this bridge

Ramp C over Waiawa Ic Struct #2 is a concrete continuous box beam or girders - multiple carrying Ramp C over Waiawa Ic Struct #2 in Honolulu County, Hawaii. It was built in 1969, so it is 56 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 5 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 59,100 vehicles a day, roughly 3% of them trucks, projected to reach 52,385 by 2025. The structure is 260 ft (79.2 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRamp C
CrossesWaiawa Ic Struct #2
Location1.44MI E/Beg Divided HWY
RouteU.S. Route 99
StateHawaii
Coordinates21.39597, -157.98194
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59,100 (2017)
Projected traffic52,385 by 2025
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
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$1.1 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp C over Waiawa Ic Struct #2 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Ramp C over Waiawa Ic Struct #2 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 December 2024.

How much traffic does Ramp C over Waiawa Ic Struct #2 carry?

About 59,100 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Ramp C over Waiawa Ic Struct #2?

The structure is 260 ft (79.2 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns Ramp C over Waiawa Ic Struct #2?

It is owned by the State Highway Agency.