US Bridges

Breen Memorial RD over Mill Creek

Fair

Del Norte County, California · Jedediah Smith State Park · Structure no. 01P0005

Built
1949
76 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
147 ft
4 main spans
Daily traffic
100
2004 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Breen Memorial RD over Mill Creek is a concrete continuous slab carrying Breen Memorial RD over Mill Creek in Del Norte County, California. It was built in 1949, so it is 76 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 162 by 2042. The structure is 147 ft (44.8 m) long and 23 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesBreen Memorial RD
CrossesMill Creek
LocationJedediah Smith State Park
RouteState Lands Road 0
Coordinates41.77413, -124.09996
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.5 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length147 ft (44.8 m)
Longest span36 ft (11 m)
Deck width23 ft (6.9 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2004)
Projected traffic162 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Breen Memorial RD over Mill Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is Breen Memorial RD over Mill 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 2024.

How much traffic does Breen Memorial RD over Mill Creek carry?

About 100 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is Breen Memorial RD over Mill Creek?

The structure is 147 ft (44.8 m) long with a longest span of 36 ft (11 m) and a deck 23 ft wide.

Who owns Breen Memorial RD over Mill Creek?

It is owned by the State Park, Forest, or Reservation Agency.