US Bridges

SR 108 over Sullivan Crk / Bergel RD

Fair

Tuolumne County, California · 10-TUO-108-R2.78 · Structure no. 32 0067

Built
2004
21 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
958 ft
5 main spans
Daily traffic
20,800
2009 count
Owner
State
State Highway Agency

About this bridge

SR 108 over Sullivan Crk / Bergel RD is a prestressed concrete continuous box beam or girders - multiple carrying SR 108 over Sullivan Crk / Bergel RD in Tuolumne County, California. It was built in 2004, so it is 21 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 20,800 vehicles a day, projected to reach 21,735 by 2045. The structure is 958 ft (292 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 108
CrossesSullivan Crk / Bergel RD
Location10-TUO-108-R2.78
RouteState Highway 108
CountyTuolumne County
StateCalifornia
Coordinates37.978, -120.34822
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length958 ft (292 m)
Longest span236 ft (72 m)
Deck width47 ft (14.3 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,800 (2009)
Projected traffic21,735 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 108 over Sullivan Crk / Bergel RD built?

It was built in 2004, making it 21 years old in 2025.

What condition is SR 108 over Sullivan Crk / Bergel RD 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 September 2023.

How much traffic does SR 108 over Sullivan Crk / Bergel RD carry?

About 20,800 vehicles per day (2009 count).

How long is SR 108 over Sullivan Crk / Bergel RD?

The structure is 958 ft (292 m) long with a longest span of 236 ft (72 m) and a deck 47 ft wide.

Who owns SR 108 over Sullivan Crk / Bergel RD?

It is owned by the State Highway Agency.