US Bridges

Kaumualii HWY over Kekupa Strm(mahaikona)

Fair

Kauai County, Hawaii · 0.55MI Se/G&r Plt Office · Structure no. 007000500301157

Built
1948
77 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
75 ft
3 main spans
Daily traffic
11,800
2019 count
Owner
State
State Highway Agency

About this bridge

Kaumualii HWY over Kekupa Strm(mahaikona) is a concrete continuous tee beam carrying Kaumualii HWY over Kekupa Strm(mahaikona) in Kauai County, Hawaii. It was built in 1948, so it is 77 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 11,800 vehicles a day, roughly 3% of them trucks, projected to reach 12,379 by 2025. The structure is 75 ft (22.9 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKaumualii HWY
CrossesKekupa Strm(mahaikona)
Location0.55MI Se/G&r Plt Office
RouteU.S. Route 50
CountyKauai County
StateHawaii
Coordinates21.94433, -159.64923
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width37 ft (11.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,800 (2019)
Projected traffic12,379 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$433,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kaumualii HWY over Kekupa Strm(mahaikona) built?

It was built in 1948, making it 77 years old in 2025.

What condition is Kaumualii HWY over Kekupa Strm(mahaikona) 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 2025.

How much traffic does Kaumualii HWY over Kekupa Strm(mahaikona) carry?

About 11,800 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Kaumualii HWY over Kekupa Strm(mahaikona)?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 37 ft wide.

Who owns Kaumualii HWY over Kekupa Strm(mahaikona)?

It is owned by the State Highway Agency.