US Bridges

Lahaina Bypass over Unknown Stream

Good

Maui County, Hawaii · 0.39MI/N Kai Hele Ku ST · Structure no. 009030001400153

Built
2017
8 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
16,500
2019 count
Owner
State
State Highway Agency

About this bridge

Lahaina Bypass over Unknown Stream is a concrete culvert carrying Lahaina Bypass over Unknown Stream in Maui County, Hawaii. It was built in 2017, so it is 8 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 16,500 vehicles a day, projected to reach 21,000 by 2041. The structure is 20 ft (6.1 m) long and 124 ft wide.

CarriesLahaina Bypass
CrossesUnknown Stream
Location0.39MI/N Kai Hele Ku ST
RouteU.S. Route 3000
StateHawaii
Coordinates20.84833, -156.65111
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating85.8 US tons
Inventory rating66 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width124 ft (37.9 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2019)
Projected traffic21,000 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lahaina Bypass over Unknown Stream built?

It was built in 2017, making it 8 years old in 2025.

What condition is Lahaina Bypass over Unknown Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Lahaina Bypass over Unknown Stream carry?

About 16,500 vehicles per day (2019 count).

How long is Lahaina Bypass over Unknown Stream?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 124 ft wide.

Who owns Lahaina Bypass over Unknown Stream?

It is owned by the State Highway Agency.