US Bridges

State Route 49 over San Domingo Creek

Good

Calaveras County, California · 10-CAL-049-12.51 · Structure no. 30 0018

Built
1934
91 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
152 ft
5 main spans
Daily traffic
7,100
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 49 over San Domingo Creek is a steel stringer/multi-beam or girder carrying State Route 49 over San Domingo Creek in Calaveras County, California. It was built in 1934, so it is 91 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,100 vehicles a day, roughly 5% of them trucks, projected to reach 7,538 by 2045. The structure is 152 ft (46.2 m) long and 28 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesState Route 49
CrossesSan Domingo Creek
Location10-CAL-049-12.51
RouteState Highway 49
CountyCalaveras County
StateCalifornia
Coordinates38.11484, -120.61465
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length152 ft (46.2 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2019)
Projected traffic7,538 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

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 State Route 49 over San Domingo Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is State Route 49 over San Domingo Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does State Route 49 over San Domingo Creek carry?

About 7,100 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is State Route 49 over San Domingo Creek?

The structure is 152 ft (46.2 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns State Route 49 over San Domingo Creek?

It is owned by the State Highway Agency.