US Bridges

Lawai Road over Kukuiula Bay

PoorPosted for load

Kauai County, Hawaii · 0.1 MI Nw/Alania RD · Structure no. 007210001510004

Built
1993
32 years old
Condition
Poor
inspected September 2024
Type
Culvert
Concrete
Length
76 ft
3 main spans
Daily traffic
500
2013 count
Owner
County
County Highway Agency

About this bridge

Lawai Road over Kukuiula Bay is a concrete culvert carrying Lawai Road over Kukuiula Bay in Kauai County, Hawaii. It was built in 1993, so it is 32 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, roughly 50% of them trucks, projected to reach 1,000 by 2035. The structure is 76 ft (23.2 m) long and 48 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesLawai Road
CrossesKukuiula Bay
Location0.1 MI Nw/Alania RD
RouteCity Street 0
StateHawaii
Coordinates21.88572, -159.48753
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourOver tidal waters; not evaluated
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating17.9 US tons
Inventory rating13.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span24 ft (7.3 m)
Deck width48 ft (14.6 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2013)
Projected traffic1,000 by 2035
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lawai Road over Kukuiula Bay built?

It was built in 1993, making it 32 years old in 2025.

What condition is Lawai Road over Kukuiula Bay in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Lawai Road over Kukuiula Bay carry?

About 500 vehicles per day (2013 count), of which roughly 50% are trucks.

How long is Lawai Road over Kukuiula Bay?

The structure is 76 ft (23.2 m) long with a longest span of 24 ft (7.3 m) and a deck 48 ft wide.

Who owns Lawai Road over Kukuiula Bay?

It is owned by the County Highway Agency.