US Bridges

Ala Moana Blvd over Pensacola Relief Drain

Fair

Honolulu County, Hawaii · 0.12MI W/Piikoi St. · Structure no. 003000920400796

Built
1973
52 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
40,500
2017 count
Owner
State
State Highway Agency

About this bridge

Ala Moana Blvd over Pensacola Relief Drain is a concrete culvert carrying Ala Moana Blvd over Pensacola Relief Drain in Honolulu County, Hawaii. It was built in 1973, so it is 52 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 40,500 vehicles a day, roughly 4% of them trucks, projected to reach 75,484 by 2025. The structure is 30 ft (9.1 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAla Moana Blvd
CrossesPensacola Relief Drain
Location0.12MI W/Piikoi St.
RouteU.S. Route 92
StateHawaii
Coordinates21.29128, -157.84953
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating69.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width102 ft (31.2 m)
Roadway width85 ft (25.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,500 (2017)
Projected traffic75,484 by 2025
Trucks4%
Lanes on structure6
Traffic directionTwo-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$606,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ala Moana Blvd over Pensacola Relief Drain built?

It was built in 1973, making it 52 years old in 2025.

What condition is Ala Moana Blvd over Pensacola Relief Drain 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 July 2023.

How much traffic does Ala Moana Blvd over Pensacola Relief Drain carry?

About 40,500 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Ala Moana Blvd over Pensacola Relief Drain?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m) and a deck 102 ft wide.

Who owns Ala Moana Blvd over Pensacola Relief Drain?

It is owned by the State Highway Agency.