US Bridges

Hi Mountain RD over Saucelito Creek

Fair

San Luis Obispo County, California · 2.5 MI E Lopez Canyon RD · Structure no. 49C0122

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
45 ft
3 main spans
Daily traffic
487
2006 count
Owner
County
County Highway Agency

About this bridge

Hi Mountain RD over Saucelito Creek is a wood or timber stringer/multi-beam or girder carrying Hi Mountain RD over Saucelito Creek in San Luis Obispo County, California. It was built in 1966, so it is 59 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 487 vehicles a day, roughly 5% of them trucks, projected to reach 790 by 2041. The structure is 45 ft (13.7 m) long and 20 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

Location

Open in Google Maps
CarriesHi Mountain RD
CrossesSaucelito Creek
Location2.5 MI E Lopez Canyon RD
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.2034, -120.42162
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic487 (2006)
Projected traffic790 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.3 mi (89 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 Hi Mountain RD over Saucelito Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Hi Mountain RD over Saucelito 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 July 2023.

How much traffic does Hi Mountain RD over Saucelito Creek carry?

About 487 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is Hi Mountain RD over Saucelito Creek?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 20 ft wide.

Who owns Hi Mountain RD over Saucelito Creek?

It is owned by the County Highway Agency.