US Bridges

Evergreen Road over Ackerson Creek

Fair

Tuolumne County, California · 2.8 MI North of Route 120 · Structure no. 32C0080

Built
2014
11 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
265
2015 count
Owner
County
County Highway Agency

About this bridge

Evergreen Road over Ackerson Creek is a concrete continuous culvert carrying Evergreen Road over Ackerson Creek in Tuolumne County, California. It was built in 2014, so it is 11 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 6 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 20% of them trucks, projected to reach 816 by 2045. The structure is 27 ft (8.1 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesEvergreen Road
CrossesAckerson Creek
Location2.8 MI North of Route 120
RouteCounty Highway 0
CountyTuolumne County
StateCalifornia
Coordinates37.83231, -119.85015
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span12 ft (3.7 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic265 (2015)
Projected traffic816 by 2045
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Evergreen Road over Ackerson Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Evergreen Road over Ackerson 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 Evergreen Road over Ackerson Creek carry?

About 265 vehicles per day (2015 count), of which roughly 20% are trucks.

How long is Evergreen Road over Ackerson Creek?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m) and a deck 32 ft wide.

Who owns Evergreen Road over Ackerson Creek?

It is owned by the County Highway Agency.