US Bridges

Mahukona Bch RD over Mahukona Beach Rd/Relief

Fair

Hawaii County, Hawaii · Tmk 5-7-03:2 · Structure no. 001570001100001

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Culvert
Steel
Length
28 ft
3 main spans
Daily traffic
50
1981 count
Owner
County
County Highway Agency

About this bridge

Mahukona Bch RD over Mahukona Beach Rd/Relief is a steel culvert carrying Mahukona Bch RD over Mahukona Beach Rd/Relief in Hawaii County, Hawaii. It was built in 1978, so it is 47 years old, younger 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 50 vehicles a day, projected to reach 63 by 2025. The structure is 28 ft (8.5 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMahukona Bch RD
CrossesMahukona Beach Rd/Relief
LocationTmk 5-7-03:2
CountyHawaii County
StateHawaii
Coordinates20.18402, -155.89978
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.4 US tons
Inventory rating37.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span7 ft (2.1 m)
Deck width40 ft (12.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1981)
Projected traffic63 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRelief for waterway
Detour if closed1.2 mi (2 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$100,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mahukona Bch RD over Mahukona Beach Rd/Relief built?

It was built in 1978, making it 47 years old in 2025.

What condition is Mahukona Bch RD over Mahukona Beach Rd/Relief 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 April 2024.

How much traffic does Mahukona Bch RD over Mahukona Beach Rd/Relief carry?

About 50 vehicles per day (1981 count).

How long is Mahukona Bch RD over Mahukona Beach Rd/Relief?

The structure is 28 ft (8.5 m) long with a longest span of 7 ft (2.1 m) and a deck 40 ft wide.

Who owns Mahukona Bch RD over Mahukona Beach Rd/Relief?

It is owned by the County Highway Agency.