US Bridges

Algerine RD over Curtis Creek

Fair

Tuolumne County, California · 2.0 MI NW of Twist RD · Structure no. 32C0033

Built
1925
100 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
75 ft
2 main spans
Daily traffic
265
2015 count
Owner
County
County Highway Agency

About this bridge

Algerine RD over Curtis Creek is a concrete continuous tee beam carrying Algerine RD over Curtis Creek in Tuolumne County, California. It was built in 1925, so it is 100 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 265 vehicles a day, roughly 1% of them trucks, projected to reach 489 by 2041. The structure is 75 ft (22.9 m) long and 19 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesAlgerine RD
CrossesCurtis Creek
Location2.0 MI NW of Twist RD
RouteCounty Highway 0
CountyTuolumne County
StateCalifornia
Coordinates37.91555, -120.38896
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110 US tons
Inventory rating72.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span36 ft (11 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2015)
Projected traffic489 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Algerine RD over Curtis Creek built?

It was built in 1925, making it 100 years old in 2025.

What condition is Algerine RD over Curtis 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 Algerine RD over Curtis Creek carry?

About 265 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Algerine RD over Curtis Creek?

The structure is 75 ft (22.9 m) long with a longest span of 36 ft (11 m) and a deck 19 ft wide.

Who owns Algerine RD over Curtis Creek?

It is owned by the County Highway Agency.