US Bridges

Road 21 over Dry Creek

Fair

Madera County, California · N of 8 Mile RD · Structure no. 41C0178

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
59 ft
2 main spans
Daily traffic
180
2016 count
Owner
County
County Highway Agency

About this bridge

Road 21 over Dry Creek is a concrete continuous slab carrying Road 21 over Dry Creek in Madera County, California. It was built in 1981, so it is 44 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 180 vehicles a day, roughly 10% of them trucks, projected to reach 247 by 2042. The structure is 59 ft (18 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRoad 21
CrossesDry Creek
LocationN of 8 Mile RD
RouteCounty Highway 0
CountyMadera County
StateCalifornia
Coordinates36.99716, -120.16605
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 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 alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length59 ft (18 m)
Longest span28 ft (8.5 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2016)
Projected traffic247 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Road 21 over Dry Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Road 21 over Dry 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 March 2024.

How much traffic does Road 21 over Dry Creek carry?

About 180 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Road 21 over Dry Creek?

The structure is 59 ft (18 m) long with a longest span of 28 ft (8.5 m) and a deck 30 ft wide.

Who owns Road 21 over Dry Creek?

It is owned by the County Highway Agency.