US Bridges

Auloa RD over Auloa Rd/Maunawili Strm

Poor

Honolulu County, Hawaii · Tmk 4-2-13 · Structure no. 003407001100001

Built
1921
104 years old
Condition
Poor
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
109 ft
6 main spans
Daily traffic
900
2009 count
Owner
County
County Highway Agency

About this bridge

Auloa RD over Auloa Rd/Maunawili Strm is a concrete continuous tee beam carrying Auloa RD over Auloa Rd/Maunawili Strm in Honolulu County, Hawaii. It was built in 1921, so it is 104 years old, older than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 900 vehicles a day, projected to reach 1,500 by 2029. The structure is 109 ft (33.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAuloa RD
CrossesAuloa Rd/Maunawili Strm
LocationTmk 4-2-13
RouteCity Street 0
StateHawaii
Coordinates21.37666, -157.76097
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length109 ft (33.2 m)
Longest span18 ft (5.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2009)
Projected traffic1,500 by 2029
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Auloa RD over Auloa Rd/Maunawili Strm built?

It was built in 1921, making it 104 years old in 2025.

What condition is Auloa RD over Auloa Rd/Maunawili Strm in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does Auloa RD over Auloa Rd/Maunawili Strm carry?

About 900 vehicles per day (2009 count).

How long is Auloa RD over Auloa Rd/Maunawili Strm?

The structure is 109 ft (33.2 m) long with a longest span of 18 ft (5.5 m) and a deck 26 ft wide.

Who owns Auloa RD over Auloa Rd/Maunawili Strm?

It is owned by the County Highway Agency.