US Bridges

Fern St. over Fern St/Makiki Strm

FairPosted for load

Honolulu County, Hawaii · TMK=2-3-23 · Structure no. 003209001100001

Built
1931
94 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
2,030
1988 count
Owner
County
County Highway Agency

About this bridge

Fern St. over Fern St/Makiki Strm is a concrete slab carrying Fern St. over Fern St/Makiki Strm in Honolulu County, Hawaii. It was built in 1931, so it is 94 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 6 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 2,030 vehicles a day, projected to reach 2,538 by 2025. The structure is 22 ft (6.6 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFern St.
CrossesFern St/Makiki Strm
LocationTMK=2-3-23
RouteCity Street 0
CountyHonolulu County
StateHawaii
Coordinates21.29243, -157.83585
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating101.7 US tons
Inventory rating79.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length22 ft (6.6 m)
Longest span22 ft (6.6 m)
Deck width55 ft (16.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,030 (1988)
Projected traffic2,538 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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$278,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fern St. over Fern St/Makiki Strm built?

It was built in 1931, making it 94 years old in 2025.

What condition is Fern St. over Fern St/Makiki 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 November 2024.

How much traffic does Fern St. over Fern St/Makiki Strm carry?

About 2,030 vehicles per day (1988 count).

How long is Fern St. over Fern St/Makiki Strm?

The structure is 22 ft (6.6 m) long with a longest span of 22 ft (6.6 m) and a deck 55 ft wide.

Who owns Fern St. over Fern St/Makiki Strm?

It is owned by the County Highway Agency.