US Bridges

Sand Island RD over Harbor (hnl(bascule Br)

Good

Honolulu County, Hawaii · 0.22MI S/S Harbor Acc RD · Structure no. 003000640400150

Built
1962
63 years old, rebuilt 2007
Condition
Good
inspected January 2024
Type
Girder and Floorbeam System
Steel
Length
693 ft
1 main span
Daily traffic
12,800
2017 count
Owner
State
State Highway Agency

About this bridge

Sand Island RD over Harbor (hnl(bascule Br) is a steel girder and floorbeam system carrying Sand Island RD over Harbor (hnl(bascule Br) in Honolulu County, Hawaii. It was built in 1962 and reconstructed in 2007, so it is 63 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,800 vehicles a day, roughly 18% of them trucks, projected to reach 18,281 by 2025. The structure is 693 ft (211.2 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesSand Island RD
CrossesHarbor (hnl(bascule Br)
Location0.22MI S/S Harbor Acc RD
RouteU.S. Route 64
CountyHonolulu County
StateHawaii
Coordinates21.31439, -157.88792
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckOpen grating
Main spans1 (+4 approach)
Design loadHS 20
Structure length693 ft (211.2 m)
Longest span300 ft (91.4 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,800 (2017)
Projected traffic18,281 by 2025
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$13.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Sand Island RD over Harbor (hnl(bascule Br) built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2007.

What condition is Sand Island RD over Harbor (hnl(bascule Br) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does Sand Island RD over Harbor (hnl(bascule Br) carry?

About 12,800 vehicles per day (2017 count), of which roughly 18% are trucks.

How long is Sand Island RD over Harbor (hnl(bascule Br)?

The structure is 693 ft (211.2 m) long with a longest span of 300 ft (91.4 m) and a deck 35 ft wide.

Who owns Sand Island RD over Harbor (hnl(bascule Br)?

It is owned by the State Highway Agency.