US Bridges

Maunawili Rd. over Kamakalepo Stream

Good

Honolulu County, Hawaii · Tmk: 4-2-09 · Structure no. 003444001100001

Built
1966
59 years old, rebuilt 2007
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
2,151
1980 count
Owner
County
County Highway Agency

About this bridge

Maunawili Rd. over Kamakalepo Stream is a prestressed concrete slab carrying Maunawili Rd. over Kamakalepo Stream in Honolulu County, Hawaii. It was built in 1966 and reconstructed in 2007, so it is 59 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 2,151 vehicles a day, projected to reach 2,689 by 2025. The structure is 48 ft (14.6 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesMaunawili Rd.
CrossesKamakalepo Stream
LocationTmk: 4-2-09
RouteCity Street 6051
CountyHonolulu County
StateHawaii
Coordinates21.36248, -157.76732
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.8 US tons
Inventory rating53.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length48 ft (14.6 m)
Longest span45 ft (13.8 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,151 (1980)
Projected traffic2,689 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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$200,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Maunawili Rd. over Kamakalepo Stream built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2007.

What condition is Maunawili Rd. over Kamakalepo 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 2023.

How much traffic does Maunawili Rd. over Kamakalepo Stream carry?

About 2,151 vehicles per day (1980 count).

How long is Maunawili Rd. over Kamakalepo Stream?

The structure is 48 ft (14.6 m) long with a longest span of 45 ft (13.8 m) and a deck 29 ft wide.

Who owns Maunawili Rd. over Kamakalepo Stream?

It is owned by the County Highway Agency.