US Bridges

Iao Valley RD over Iao Strm

FairPosted for load

Maui County, Hawaii · Below Kapaniwai Park · Structure no. 009003201100001

Built
1955
70 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
124 ft
3 main spans
Daily traffic
3,000
1980 count
Owner
County
County Highway Agency

About this bridge

Iao Valley RD over Iao Strm is a steel continuous stringer/multi-beam or girder carrying Iao Valley RD over Iao Strm in Maui County, Hawaii. It was built in 1955, so it is 70 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 3,000 vehicles a day, projected to reach 3,750 by 2025. The structure is 124 ft (37.7 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesIao Valley RD
CrossesIao Strm
LocationBelow Kapaniwai Park
RouteCounty Highway 0
CountyMaui County
StateHawaii
Coordinates20.88292, -156.53378
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating22.8 US tons
Inventory rating17.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length124 ft (37.7 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (1980)
Projected traffic3,750 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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$560,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Iao Valley RD over Iao Strm built?

It was built in 1955, making it 70 years old in 2025.

What condition is Iao Valley RD over Iao 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 October 2024.

How much traffic does Iao Valley RD over Iao Strm carry?

About 3,000 vehicles per day (1980 count).

How long is Iao Valley RD over Iao Strm?

The structure is 124 ft (37.7 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns Iao Valley RD over Iao Strm?

It is owned by the County Highway Agency.