US Bridges

Nimitz HWY over Slip Cover Hon Harbor

Fair

Honolulu County, Hawaii · 0.25MI E/Pacific ST · Structure no. 003000920400580

Built
1952
73 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
192 ft
6 main spans
Daily traffic
57,600
2017 count
Owner
State
State Highway Agency

About this bridge

Nimitz HWY over Slip Cover Hon Harbor is a concrete continuous slab carrying Nimitz HWY over Slip Cover Hon Harbor in Honolulu County, Hawaii. It was built in 1952, so it is 73 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 192 ft (58.5 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNimitz HWY
CrossesSlip Cover Hon Harbor
Location0.25MI E/Pacific ST
RouteU.S. Route 92
CountyHonolulu County
StateHawaii
Coordinates21.31412, -157.86659
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.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating67.5 US tons
Inventory rating52.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span27 ft (8.2 m)
Deck width69 ft (21 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,600 (2017)
Projected traffic99,870 by 2025
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
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$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Nimitz HWY over Slip Cover Hon Harbor built?

It was built in 1952, making it 73 years old in 2025.

What condition is Nimitz HWY over Slip Cover Hon Harbor 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 Slip Cover Hon Harbor carry?

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

How long is Nimitz HWY over Slip Cover Hon Harbor?

The structure is 192 ft (58.5 m) long with a longest span of 27 ft (8.2 m) and a deck 69 ft wide.

Who owns Nimitz HWY over Slip Cover Hon Harbor?

It is owned by the State Highway Agency.