US Bridges

Burrel Road over Upper N Fk Mattole Riv

Fair

Humboldt County, California · 0.5 MI W Mattole RD · Structure no. 04C0127

Built
1961
64 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
183 ft
3 main spans
Daily traffic
142
2009 count
Owner
County
County Highway Agency

About this bridge

Burrel Road over Upper N Fk Mattole Riv is a steel stringer/multi-beam or girder carrying Burrel Road over Upper N Fk Mattole Riv in Humboldt County, California. It was built in 1961, so it is 64 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 142 vehicles a day, roughly 10% of them trucks, projected to reach 174 by 2046. The structure is 183 ft (55.8 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBurrel Road
CrossesUpper N Fk Mattole Riv
Location0.5 MI W Mattole RD
RouteCounty Highway 0
CountyHumboldt County
StateCalifornia
Coordinates40.24401, -124.13233
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
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 alignment8: Equal to present desirable criteria
Operating rating109.2 US tons
Inventory rating65.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length183 ft (55.8 m)
Longest span60 ft (18.3 m)
Deck width12 ft (3.8 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic142 (2009)
Projected traffic174 by 2046
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Burrel Road over Upper N Fk Mattole Riv built?

It was built in 1961, making it 64 years old in 2025.

What condition is Burrel Road over Upper N Fk Mattole Riv 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 March 2024.

How much traffic does Burrel Road over Upper N Fk Mattole Riv carry?

About 142 vehicles per day (2009 count), of which roughly 10% are trucks.

How long is Burrel Road over Upper N Fk Mattole Riv?

The structure is 183 ft (55.8 m) long with a longest span of 60 ft (18.3 m) and a deck 12 ft wide.

Who owns Burrel Road over Upper N Fk Mattole Riv?

It is owned by the County Highway Agency.