US Bridges

Maxwell-Sites RD over Stone Corral Creek

FairPosted for load

Colusa County, California · 8.8 MI W/O I-5 · Structure no. 15C0066

Built
1929
96 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
77 ft
3 main spans
Daily traffic
459
2014 count
Owner
County
County Highway Agency

About this bridge

Maxwell-Sites RD over Stone Corral Creek is a concrete tee beam carrying Maxwell-Sites RD over Stone Corral Creek in Colusa County, California. It was built in 1929, so it is 96 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.

It carries about 459 vehicles a day, roughly 1% of them trucks, projected to reach 1,435 by 2042. The structure is 77 ft (23.5 m) long and 21 ft wide. If it were closed, the detour would be 96.9 mi (156 km).

CarriesMaxwell-Sites RD
CrossesStone Corral Creek
Location8.8 MI W/O I-5
RouteCounty Highway 0
Coordinates39.3073, -122.32687
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating21.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span50 ft (15.2 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic459 (2014)
Projected traffic1,435 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed96.9 mi (156 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 Maxwell-Sites RD over Stone Corral Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is Maxwell-Sites RD over Stone Corral 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 October 2024.

How much traffic does Maxwell-Sites RD over Stone Corral Creek carry?

About 459 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Maxwell-Sites RD over Stone Corral Creek?

The structure is 77 ft (23.5 m) long with a longest span of 50 ft (15.2 m) and a deck 21 ft wide.

Who owns Maxwell-Sites RD over Stone Corral Creek?

It is owned by the County Highway Agency.