US Bridges

Kawaihae-Mahukona over Unmd Strm-Mtl Culvt

Good

Hawaii County, Hawaii · 11 02MI N/Maluokalani ST · Structure no. 001002700501199

Built
1972
53 years old
Condition
Good
inspected April 2024
Type
Culvert
Steel
Length
26 ft
2 main spans
Daily traffic
3,100
2017 count
Owner
State
State Highway Agency

About this bridge

Kawaihae-Mahukona over Unmd Strm-Mtl Culvt is a steel culvert carrying Kawaihae-Mahukona over Unmd Strm-Mtl Culvt in Hawaii County, Hawaii. It was built in 1972, so it is 53 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 3,100 vehicles a day, roughly 6% of them trucks, projected to reach 5,473 by 2025. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesKawaihae-Mahukona
CrossesUnmd Strm-Mtl Culvt
Location11 02MI N/Maluokalani ST
RouteU.S. Route 270
StateHawaii
Coordinates20.19504, -155.89473
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2017)
Projected traffic5,473 by 2025
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kawaihae-Mahukona over Unmd Strm-Mtl Culvt built?

It was built in 1972, making it 53 years old in 2025.

What condition is Kawaihae-Mahukona over Unmd Strm-Mtl Culvt 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 April 2024.

How much traffic does Kawaihae-Mahukona over Unmd Strm-Mtl Culvt carry?

About 3,100 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is Kawaihae-Mahukona over Unmd Strm-Mtl Culvt?

The structure is 26 ft (7.9 m) long with a longest span of 11 ft (3.5 m).

Who owns Kawaihae-Mahukona over Unmd Strm-Mtl Culvt?

It is owned by the State Highway Agency.