US Bridges

Crystal Cove over Los Transcos Creek

Fair

Orange County, California · 0.4 MI S/Sw of SR 1 · Structure no. 55P0004

Built
1994
31 years old
Condition
Fair
inspected February 2024
Type
Truss - Thru
Wood or Timber
Length
31 ft
1 main span
Daily traffic
100
2014 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Crystal Cove over Los Transcos Creek is a wood or timber truss - thru carrying Crystal Cove over Los Transcos Creek in Orange County, California. It was built in 1994, so it is 31 years old, younger 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 5% of them trucks, projected to reach 109 by 2046. The structure is 31 ft (9.6 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCrystal Cove
CrossesLos Transcos Creek
Location0.4 MI S/Sw of SR 1
RouteState Lands Road 0
Coordinates33.57453, -117.84008
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span28 ft (8.5 m)
Deck width13 ft (3.9 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2014)
Projected traffic109 by 2046
Trucks5%
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

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Crystal Cove over Los Transcos Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Crystal Cove over Los Transcos 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 February 2024.

How much traffic does Crystal Cove over Los Transcos Creek carry?

About 100 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Crystal Cove over Los Transcos Creek?

The structure is 31 ft (9.6 m) long with a longest span of 28 ft (8.5 m) and a deck 13 ft wide.

Who owns Crystal Cove over Los Transcos Creek?

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