US Bridges

SR 108 (mchenry) over M.I.D. Canal Lateral 4

Fair

Stanislaus County, California · 10-STA-108-23.57-MOD · Structure no. 38 0042

Built
1960
65 years old
Condition
Fair
inspected March 2022
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
29,300
2015 count
Owner
State
State Highway Agency

About this bridge

SR 108 (mchenry) over M.I.D. Canal Lateral 4 is a concrete continuous culvert carrying SR 108 (mchenry) over M.I.D. Canal Lateral 4 in Stanislaus County, California. It was built in 1960, so it is 65 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 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 29,300 vehicles a day, roughly 4% of them trucks, projected to reach 35,034 by 2042. The structure is 26 ft (8 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 108 (mchenry)
CrossesM.I.D. Canal Lateral 4
Location10-STA-108-23.57-MOD
RouteState Highway 108
CountyStanislaus County
StateCalifornia
Coordinates37.65279, -120.99366
Functional classUrban Other Principal 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
Channel and channel protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length26 ft (8 m)
Longest span8 ft (2.4 m)
Deck width82 ft (25 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,300 (2015)
Projected traffic35,034 by 2042
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 (mchenry) over M.I.D. Canal Lateral 4 built?

It was built in 1960, making it 65 years old in 2025.

What condition is SR 108 (mchenry) over M.I.D. Canal Lateral 4 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 March 2022.

How much traffic does SR 108 (mchenry) over M.I.D. Canal Lateral 4 carry?

About 29,300 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is SR 108 (mchenry) over M.I.D. Canal Lateral 4?

The structure is 26 ft (8 m) long with a longest span of 8 ft (2.4 m) and a deck 82 ft wide.

Who owns SR 108 (mchenry) over M.I.D. Canal Lateral 4?

It is owned by the State Highway Agency.