US Bridges

Makani Road over Unknown Stream

FairPosted for load

Maui County, Hawaii · 0.8MI N/Haleakala HWY Int · Structure no. 009313201100001

Built
1983
42 years old, rebuilt 2000
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
65 ft
5 main spans
Daily traffic
440
1989 count
Owner
County
County Highway Agency

About this bridge

Makani Road over Unknown Stream is a steel culvert carrying Makani Road over Unknown Stream in Maui County, Hawaii. It was built in 1983 and reconstructed in 2000, so it is 42 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. Its operating status is: posted for load restriction.

It carries about 440 vehicles a day, projected to reach 550 by 2025. The structure is 65 ft (19.8 m) long and 36 ft wide.

Location

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CarriesMakani Road
CrossesUnknown Stream
Location0.8MI N/Haleakala HWY Int
RouteCounty Highway 0
CountyMaui County
StateHawaii
Coordinates20.84416, -156.33196
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating11.8 US tons
Inventory rating8.9 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckOther
Main spans5
Design loadH 15
Structure length65 ft (19.8 m)
Longest span13 ft (4 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic440 (1989)
Projected traffic550 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Makani Road over Unknown Stream built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2000.

What condition is Makani Road over Unknown Stream 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 June 2023.

How much traffic does Makani Road over Unknown Stream carry?

About 440 vehicles per day (1989 count).

How long is Makani Road over Unknown Stream?

The structure is 65 ft (19.8 m) long with a longest span of 13 ft (4 m) and a deck 36 ft wide.

Who owns Makani Road over Unknown Stream?

It is owned by the County Highway Agency.