US Bridges

Kam V HWY over Mapulehu Strm

Fair

Maui County, Hawaii · 2.31MI E/Kilohana Sch · Structure no. 009004500900536

Built
1950
75 years old, rebuilt 1968
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
41 ft
2 main spans
Daily traffic
850
2017 count
Owner
State
State Highway Agency

About this bridge

Kam V HWY over Mapulehu Strm is a concrete slab carrying Kam V HWY over Mapulehu Strm in Maui County, Hawaii. It was built in 1950 and reconstructed in 1968, so it is 75 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 5 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 850 vehicles a day, roughly 3% of them trucks, projected to reach 515 by 2025. The structure is 41 ft (12.6 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesKam V HWY
CrossesMapulehu Strm
Location2.31MI E/Kilohana Sch
RouteState Highway 450
CountyMaui County
StateHawaii
Coordinates21.07042, -156.8043
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span18 ft (5.6 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2017)
Projected traffic515 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam V HWY over Mapulehu Strm built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1968.

What condition is Kam V HWY over Mapulehu Strm 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 October 2024.

How much traffic does Kam V HWY over Mapulehu Strm carry?

About 850 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Kam V HWY over Mapulehu Strm?

The structure is 41 ft (12.6 m) long with a longest span of 18 ft (5.6 m) and a deck 21 ft wide.

Who owns Kam V HWY over Mapulehu Strm?

It is owned by the State Highway Agency.