US Bridges

San Simeon Crk RD over San Simeon Creek

Good

San Luis Obispo County, California · 5.7 MI E of SR 1 · Structure no. 49C0103

Built
1964
61 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
77 ft
3 main spans
Daily traffic
670
2007 count
Owner
County
County Highway Agency

About this bridge

San Simeon Crk RD over San Simeon Creek is a wood or timber stringer/multi-beam or girder carrying San Simeon Crk RD over San Simeon Creek in San Luis Obispo County, California. It was built in 1964, so it is 61 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 670 vehicles a day, roughly 3% of them trucks, projected to reach 624 by 2046. The structure is 77 ft (23.5 m) long and 18 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSan Simeon Crk RD
CrossesSan Simeon Creek
Location5.7 MI E of SR 1
RouteCounty Highway 0
Coordinates35.62718, -121.05354
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.5 US tons
Inventory rating36 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span24 ft (7.3 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2007)
Projected traffic624 by 2046
Trucks3%
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 San Simeon Crk RD over San Simeon Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is San Simeon Crk RD over San Simeon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does San Simeon Crk RD over San Simeon Creek carry?

About 670 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is San Simeon Crk RD over San Simeon Creek?

The structure is 77 ft (23.5 m) long with a longest span of 24 ft (7.3 m) and a deck 18 ft wide.

Who owns San Simeon Crk RD over San Simeon Creek?

It is owned by the County Highway Agency.