US Bridges

Milton Road over Huntington Creek

Fair

Calaveras County, California · 1.6 MI NW Rock Ck RD Mltn · Structure no. 30C0042

Built
1967
58 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,000
2014 count
Owner
County
County Highway Agency

About this bridge

Milton Road over Huntington Creek is a concrete continuous culvert carrying Milton Road over Huntington Creek in Calaveras County, California. It was built in 1967, so it is 58 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 1,000 vehicles a day, roughly 2% of them trucks, projected to reach 1,621 by 2043. The structure is 25 ft (7.5 m) long and 34 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

CarriesMilton Road
CrossesHuntington Creek
Location1.6 MI NW Rock Ck RD Mltn
RouteCounty Highway 0
Coordinates38.05405, -120.86458
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2014)
Projected traffic1,621 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.3 mi (89 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 Milton Road over Huntington Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Milton Road over Huntington 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 February 2025.

How much traffic does Milton Road over Huntington Creek carry?

About 1,000 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Milton Road over Huntington Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m) and a deck 34 ft wide.

Who owns Milton Road over Huntington Creek?

It is owned by the County Highway Agency.