US Bridges

Nimitz HWY over Kapalama Canal (w.B)

Fair

Honolulu County, Hawaii · 0.25MI Se/Waiakamilo RD · Structure no. 003000920400481

Built
1949
76 years old, rebuilt 1957
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
142 ft
7 main spans
Daily traffic
57,600
2017 count
Owner
State
State Highway Agency

About this bridge

Nimitz HWY over Kapalama Canal (w.B) is a concrete continuous slab carrying Nimitz HWY over Kapalama Canal (w.B) in Honolulu County, Hawaii. It was built in 1949 and reconstructed in 1957, so it is 76 years old, older 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 57,600 vehicles a day, roughly 5% of them trucks, projected to reach 99,870 by 2025. The structure is 142 ft (43.3 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNimitz HWY
CrossesKapalama Canal (w.B)
Location0.25MI Se/Waiakamilo RD
RouteU.S. Route 92
StateHawaii
Coordinates21.32017, -157.87727
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length142 ft (43.3 m)
Longest span21 ft (6.4 m)
Deck width51 ft (15.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,600 (2017)
Projected traffic99,870 by 2025
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nimitz HWY over Kapalama Canal (w.B) built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1957.

What condition is Nimitz HWY over Kapalama Canal (w.B) 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 January 2024.

How much traffic does Nimitz HWY over Kapalama Canal (w.B) carry?

About 57,600 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Nimitz HWY over Kapalama Canal (w.B)?

The structure is 142 ft (43.3 m) long with a longest span of 21 ft (6.4 m) and a deck 51 ft wide.

Who owns Nimitz HWY over Kapalama Canal (w.B)?

It is owned by the State Highway Agency.