US Bridges

Kaumualii HWY over Nawiliwili Str/Lihue M

Fair

Kauai County, Hawaii · 0.16MI Se/Haleko RD · Structure no. 007000500403271

Built
1936
89 years old, rebuilt 2014
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
309 ft
5 main spans
Daily traffic
34,100
2017 count
Owner
State
State Highway Agency

About this bridge

Kaumualii HWY over Nawiliwili Str/Lihue M is a steel stringer/multi-beam or girder carrying Kaumualii HWY over Nawiliwili Str/Lihue M in Kauai County, Hawaii. It was built in 1936 and reconstructed in 2014, so it is 89 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 34,100 vehicles a day, roughly 4% of them trucks, projected to reach 32,243 by 2025. The structure is 309 ft (94.2 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesKaumualii HWY
CrossesNawiliwili Str/Lihue M
Location0.16MI Se/Haleko RD
RouteU.S. Route 50
StateHawaii
Coordinates21.97542, -159.37378
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadH 15
Structure length309 ft (94.2 m)
Longest span65 ft (19.9 m)
Deck width47 ft (14.2 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,100 (2017)
Projected traffic32,243 by 2025
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 statusEligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$13.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kaumualii HWY over Nawiliwili Str/Lihue M built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 2014.

What condition is Kaumualii HWY over Nawiliwili Str/Lihue M 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 April 2023.

How much traffic does Kaumualii HWY over Nawiliwili Str/Lihue M carry?

About 34,100 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Kaumualii HWY over Nawiliwili Str/Lihue M?

The structure is 309 ft (94.2 m) long with a longest span of 65 ft (19.9 m) and a deck 47 ft wide.

Who owns Kaumualii HWY over Nawiliwili Str/Lihue M?

It is owned by the State Highway Agency.