US Bridges

Noakes ST over Harbison Cyn Creek

Fair

San Diego County, California · 140 Ft E/O Harbison Cyn · Structure no. 57C0385

Built
1944
81 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
220
2016 count
Owner
County
County Highway Agency

About this bridge

Noakes ST over Harbison Cyn Creek is a concrete continuous slab carrying Noakes ST over Harbison Cyn Creek in San Diego County, California. It was built in 1944, so it is 81 years old, older than the California average of 54.8 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.

It carries about 220 vehicles a day, roughly 2% of them trucks, projected to reach 256 by 2040. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNoakes ST
CrossesHarbison Cyn Creek
Location140 Ft E/O Harbison Cyn
RouteCounty Highway 0
CountySan Diego County
StateCalifornia
Coordinates32.82332, -116.82699
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span11 ft (3.4 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2016)
Projected traffic256 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Noakes ST over Harbison Cyn Creek built?

It was built in 1944, making it 81 years old in 2025.

What condition is Noakes ST over Harbison Cyn Creek 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 May 2023.

How much traffic does Noakes ST over Harbison Cyn Creek carry?

About 220 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Noakes ST over Harbison Cyn Creek?

The structure is 23 ft (7 m) long with a longest span of 11 ft (3.4 m) and a deck 22 ft wide.

Who owns Noakes ST over Harbison Cyn Creek?

It is owned by the County Highway Agency.