US Bridges

Lawson Valley RD over Lawson Creek

Fair

San Diego County, California · 3.4MI E/O Skyline Trk Trl · Structure no. 57C0344

Built
1948
77 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
26 ft
1 main span
Daily traffic
852
2016 count
Owner
County
County Highway Agency

About this bridge

Lawson Valley RD over Lawson Creek is a wood or timber stringer/multi-beam or girder carrying Lawson Valley RD over Lawson Creek in San Diego County, California. It was built in 1948, so it is 77 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 852 vehicles a day, roughly 2% of them trucks, projected to reach 1,972 by 2041. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLawson Valley RD
CrossesLawson Creek
Location3.4MI E/O Skyline Trk Trl
RouteCounty Highway 0
Coordinates32.75409, -116.7824
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32.8 US tons
Inventory rating22.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic852 (2016)
Projected traffic1,972 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-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 Lawson Valley RD over Lawson Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Lawson Valley RD over Lawson 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 April 2024.

How much traffic does Lawson Valley RD over Lawson Creek carry?

About 852 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is Lawson Valley RD over Lawson Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 22 ft wide.

Who owns Lawson Valley RD over Lawson Creek?

It is owned by the County Highway Agency.