US Bridges

Wyllie ST over Waiolani Strm

FairPosted for load

Honolulu County, Hawaii · 1200W/NUUANU A/Wyllie ST · Structure no. 003083681400001

Built
1931
94 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
36 ft
1 main span
Daily traffic
12,302
1988 count
Owner
County
County Highway Agency

About this bridge

Wyllie ST over Waiolani Strm is a concrete tee beam carrying Wyllie ST over Waiolani Strm in Honolulu County, Hawaii. It was built in 1931, so it is 94 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. Its operating status is: posted for load restriction.

It carries about 12,302 vehicles a day, projected to reach 15,378 by 2025. The structure is 36 ft (11 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWyllie ST
CrossesWaiolani Strm
Location1200W/NUUANU A/Wyllie ST
RouteCity Street 0
CountyHonolulu County
StateHawaii
Coordinates21.33041, -157.84836
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span29 ft (8.7 m)
Deck width57 ft (17.3 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,302 (1988)
Projected traffic15,378 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$358,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyllie ST over Waiolani Strm built?

It was built in 1931, making it 94 years old in 2025.

What condition is Wyllie ST over Waiolani Strm 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 November 2024.

How much traffic does Wyllie ST over Waiolani Strm carry?

About 12,302 vehicles per day (1988 count).

How long is Wyllie ST over Waiolani Strm?

The structure is 36 ft (11 m) long with a longest span of 29 ft (8.7 m) and a deck 57 ft wide.

Who owns Wyllie ST over Waiolani Strm?

It is owned by the County Highway Agency.