US Bridges

FAI-H1 over Kap Grade Sep

Good

Honolulu County, Hawaii · 0.21MI E/Old Waialae RD · Structure no. 003000H10202524

Built
1967
58 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
880 ft
11 main spans
Daily traffic
112,200
2017 count
Owner
State
State Highway Agency

About this bridge

FAI-H1 over Kap Grade Sep is a concrete continuous box beam or girders - multiple carrying FAI-H1 over Kap Grade Sep in Honolulu County, Hawaii. It was built in 1967, so it is 58 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 112,200 vehicles a day, roughly 2% of them trucks, projected to reach 140,626 by 2025. The structure is 880 ft (268.2 m) long and 122 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFAI-H1
CrossesKap Grade Sep
Location0.21MI E/Old Waialae RD
RouteInterstate 0H1
StateHawaii
Coordinates21.28889, -157.81461
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.6 US tons
Inventory rating60.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length880 ft (268.2 m)
Longest span85 ft (25.9 m)
Deck width122 ft (37.3 m)
Roadway width117 ft (35.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112,200 (2017)
Projected traffic140,626 by 2025
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$11.3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAI-H1 over Kap Grade Sep built?

It was built in 1967, making it 58 years old in 2025.

What condition is FAI-H1 over Kap Grade Sep 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 July 2023.

How much traffic does FAI-H1 over Kap Grade Sep carry?

About 112,200 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is FAI-H1 over Kap Grade Sep?

The structure is 880 ft (268.2 m) long with a longest span of 85 ft (25.9 m) and a deck 122 ft wide.

Who owns FAI-H1 over Kap Grade Sep?

It is owned by the State Highway Agency.