US Bridges

Phoenix Lake RD over Sullivan Creek

Fair

Tuolumne County, California · 4.1 MI NE of SR 108 · Structure no. 32C0078

Built
2010
15 years old
Condition
Fair
inspected May 2024
Type
Slab
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
4,796
2015 count
Owner
County
County Highway Agency

About this bridge

Phoenix Lake RD over Sullivan Creek is a prestressed concrete slab carrying Phoenix Lake RD over Sullivan Creek in Tuolumne County, California. It was built in 2010, so it is 15 years old, younger 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 4,796 vehicles a day, roughly 4% of them trucks, projected to reach 2,281 by 2042. The structure is 83 ft (25.4 m) long and 45 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesPhoenix Lake RD
CrossesSullivan Creek
Location4.1 MI NE of SR 108
RouteCounty Highway 0
CountyTuolumne County
StateCalifornia
Coordinates38.00955, -120.29393
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length83 ft (25.4 m)
Longest span77 ft (23.6 m)
Deck width45 ft (13.7 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,796 (2015)
Projected traffic2,281 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Phoenix Lake RD over Sullivan Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is Phoenix Lake RD over Sullivan 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 May 2024.

How much traffic does Phoenix Lake RD over Sullivan Creek carry?

About 4,796 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Phoenix Lake RD over Sullivan Creek?

The structure is 83 ft (25.4 m) long with a longest span of 77 ft (23.6 m) and a deck 45 ft wide.

Who owns Phoenix Lake RD over Sullivan Creek?

It is owned by the County Highway Agency.