US Bridges

Kam HWY over Wahiawa Rsvr(wilson Br)

Fair

Honolulu County, Hawaii · 0.11MI S/Avacado ST · Structure no. 003000800400003

Built
1984
41 years old
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
375 ft
3 main spans
Daily traffic
55,700
2019 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Wahiawa Rsvr(wilson Br) is a prestressed concrete continuous box beam or girders - multiple carrying Kam HWY over Wahiawa Rsvr(wilson Br) in Honolulu County, Hawaii. It was built in 1984, so it is 41 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 55,700 vehicles a day, roughly 4% of them trucks, projected to reach 52,480 by 2025. The structure is 375 ft (114.3 m) long and 104 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKam HWY
CrossesWahiawa Rsvr(wilson Br)
Location0.11MI S/Avacado ST
RouteU.S. Route 80
CountyHonolulu County
StateHawaii
Coordinates21.49213, -158.02848
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 alignment8: Equal to present desirable criteria
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length375 ft (114.3 m)
Longest span150 ft (45.7 m)
Deck width104 ft (31.7 m)
Roadway width85 ft (26 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,700 (2019)
Projected traffic52,480 by 2025
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$4.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Wahiawa Rsvr(wilson Br) built?

It was built in 1984, making it 41 years old in 2025.

What condition is Kam HWY over Wahiawa Rsvr(wilson Br) 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 February 2024.

How much traffic does Kam HWY over Wahiawa Rsvr(wilson Br) carry?

About 55,700 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Kam HWY over Wahiawa Rsvr(wilson Br)?

The structure is 375 ft (114.3 m) long with a longest span of 150 ft (45.7 m) and a deck 104 ft wide.

Who owns Kam HWY over Wahiawa Rsvr(wilson Br)?

It is owned by the State Highway Agency.