US Bridges

Kilburn Road over Orestimba Creek

FairPosted for load

Stanislaus County, California · .45 MI S Crows Landing RD · Structure no. 38C0168

Built
1910
115 years old, rebuilt 1918
Condition
Fair
inspected October 2024
Type
Truss - Thru
Other
Length
62 ft
1 main span
Daily traffic
122
2017 count
Owner
County
County Highway Agency

About this bridge

Kilburn Road over Orestimba Creek is a other truss - thru carrying Kilburn Road over Orestimba Creek in Stanislaus County, California. It was built in 1910 and reconstructed in 1918, so it is 115 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. Its operating status is: posted for load restriction.

It carries about 122 vehicles a day, roughly 18% of them trucks, projected to reach 184 by 2045. The structure is 62 ft (18.9 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesKilburn Road
CrossesOrestimba Creek
Location.45 MI S Crows Landing RD
RouteCounty Highway 0
CountyStanislaus County
StateCalifornia
Coordinates37.3992, -121.03239
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.9 US tons
Inventory rating7.2 US tons

Structure

Structure typeTruss - Thru
MaterialOther
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width20 ft (6 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2017)
Projected traffic184 by 2045
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kilburn Road over Orestimba Creek built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1918.

What condition is Kilburn Road over Orestimba 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 October 2024.

How much traffic does Kilburn Road over Orestimba Creek carry?

About 122 vehicles per day (2017 count), of which roughly 18% are trucks.

How long is Kilburn Road over Orestimba Creek?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 20 ft wide.

Who owns Kilburn Road over Orestimba Creek?

It is owned by the County Highway Agency.