US Bridges

Huasna Townsite RD over Huasna River

PoorClosed to traffic

San Luis Obispo County, California · 3.1 MI SE of Huasna · Structure no. 49C0147

Built
1965
60 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
174 ft
9 main spans
Daily traffic
288
2008 count
Owner
County
County Highway Agency

About this bridge

Huasna Townsite RD over Huasna River is a wood or timber stringer/multi-beam or girder carrying Huasna Townsite RD over Huasna River in San Luis Obispo County, California. It was built in 1965, so it is 60 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 288 vehicles a day, roughly 3% of them trucks, projected to reach 463 by 2041. The structure is 174 ft (53 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHuasna Townsite RD
CrossesHuasna River
Location3.1 MI SE of Huasna
RouteCounty Highway 0
Coordinates35.08685, -120.36976
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; bridge has failed and is closed
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans9
Design loadUnknown
Structure length174 ft (53 m)
Longest span21 ft (6.4 m)
Deck width13 ft (3.9 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic288 (2008)
Projected traffic463 by 2041
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$799,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Huasna Townsite RD over Huasna River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Huasna Townsite RD over Huasna River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Huasna Townsite RD over Huasna River carry?

About 288 vehicles per day (2008 count), of which roughly 3% are trucks.

How long is Huasna Townsite RD over Huasna River?

The structure is 174 ft (53 m) long with a longest span of 21 ft (6.4 m) and a deck 13 ft wide.

Who owns Huasna Townsite RD over Huasna River?

It is owned by the County Highway Agency.