US Bridges

Brookwood Drive over Jacoby Creek

Fair

Humboldt County, California · 0.1 MI S/O Jacoby Crk RD · Structure no. 04C0124

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Truss - Thru
Wood or Timber
Length
68 ft
1 main span
Daily traffic
162
2011 count
Owner
County
County Highway Agency

About this bridge

Brookwood Drive over Jacoby Creek is a wood or timber truss - thru carrying Brookwood Drive over Jacoby Creek in Humboldt County, California. It was built in 1967, so it is 58 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 162 vehicles a day, roughly 1% of them trucks, projected to reach 256 by 2043. The structure is 68 ft (20.7 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesBrookwood Drive
CrossesJacoby Creek
Location0.1 MI S/O Jacoby Crk RD
RouteCounty Highway 0
CountyHumboldt County
StateCalifornia
Coordinates40.83201, -124.04539
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating22.5 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span60 ft (18.3 m)
Deck width20 ft (6 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic162 (2011)
Projected traffic256 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Brookwood Drive over Jacoby Creek built?

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

What condition is Brookwood Drive over Jacoby 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 June 2023.

How much traffic does Brookwood Drive over Jacoby Creek carry?

About 162 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Brookwood Drive over Jacoby Creek?

The structure is 68 ft (20.7 m) long with a longest span of 60 ft (18.3 m) and a deck 20 ft wide.

Who owns Brookwood Drive over Jacoby Creek?

It is owned by the County Highway Agency.