US Bridges

Maalo RD over Hanamaulu Strm

Fair

Kauai County, Hawaii · 0 04MI N/INT/583 & 56 · Structure no. 007005830500004

Built
1927
98 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete
Length
35 ft
1 main span
Daily traffic
1,200
2017 count
Owner
State
State Highway Agency

About this bridge

Maalo RD over Hanamaulu Strm is a concrete tee beam carrying Maalo RD over Hanamaulu Strm in Kauai County, Hawaii. It was built in 1927, so it is 98 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 6 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 1,200 vehicles a day, roughly 1% of them trucks, projected to reach 10,326 by 2025. The structure is 35 ft (10.6 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMaalo RD
CrossesHanamaulu Strm
Location0 04MI N/INT/583 & 56
RouteU.S. Route 583
StateHawaii
Coordinates21.99193, -159.36593
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating35.4 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length35 ft (10.6 m)
Longest span32 ft (9.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2017)
Projected traffic10,326 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$210,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Maalo RD over Hanamaulu Strm built?

It was built in 1927, making it 98 years old in 2025.

What condition is Maalo RD over Hanamaulu 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 February 2023.

How much traffic does Maalo RD over Hanamaulu Strm carry?

About 1,200 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Maalo RD over Hanamaulu Strm?

The structure is 35 ft (10.6 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.

Who owns Maalo RD over Hanamaulu Strm?

It is owned by the State Highway Agency.