US Bridges

Kamalu RD over Kalama Stream

Good

Kauai County, Hawaii · 0.27 MI Ne/ Opaekaa RD · Structure no. 007420221142003

Built
2022
3 years old
Condition
Good
inspected September 2024
Type
Truss - Deck
Steel
Length
60 ft
1 main span
Daily traffic
4,200
2021 count
Owner
County
County Highway Agency

About this bridge

Kamalu RD over Kalama Stream is a steel truss - deck carrying Kamalu RD over Kalama Stream in Kauai County, Hawaii. It was built in 2022, so it is 3 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. Its operating status is: open, temporary structure in place while original is closed.

It carries about 4,200 vehicles a day, projected to reach 5,999 by 2041. The structure is 60 ft (18.4 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKamalu RD
CrossesKalama Stream
Location0.27 MI Ne/ Opaekaa RD
RouteCounty Highway 581
CountyKauai County
StateHawaii
Coordinates22.05919, -159.36578
Functional classRural Minor 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, temporary structure in place while original is closed
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating41.4 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 25 or greater
Structure length60 ft (18.4 m)
Longest span59 ft (18.1 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2021)
Projected traffic5,999 by 2041
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kamalu RD over Kalama Stream built?

It was built in 2022, making it 3 years old in 2025.

What condition is Kamalu RD over Kalama 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 Kamalu RD over Kalama Stream carry?

About 4,200 vehicles per day (2021 count).

How long is Kamalu RD over Kalama Stream?

The structure is 60 ft (18.4 m) long with a longest span of 59 ft (18.1 m) and a deck 18 ft wide.

Who owns Kamalu RD over Kalama Stream?

It is owned by the County Highway Agency.