US Bridges

State Route 16 over Cosumnes River

Fair

Sacramento County, California · 03-SAC-016-19.72 · Structure no. 24 0080

Built
1952
73 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
250 ft
3 main spans
Daily traffic
11,100
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 16 over Cosumnes River is a concrete continuous box beam or girders - multiple carrying State Route 16 over Cosumnes River in Sacramento County, California. It was built in 1952, so it is 73 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.

It carries about 11,100 vehicles a day, roughly 5% of them trucks, projected to reach 16,725 by 2046. The structure is 250 ft (76.2 m) long and 37 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesState Route 16
CrossesCosumnes River
Location03-SAC-016-19.72
RouteState Highway 16
Coordinates38.49215, -121.09197
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating44.6 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length250 ft (76.2 m)
Longest span134 ft (40.8 m)
Deck width37 ft (11.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2019)
Projected traffic16,725 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 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 16 over Cosumnes River built?

It was built in 1952, making it 73 years old in 2025.

What condition is State Route 16 over Cosumnes River 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 January 2024.

How much traffic does State Route 16 over Cosumnes River carry?

About 11,100 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is State Route 16 over Cosumnes River?

The structure is 250 ft (76.2 m) long with a longest span of 134 ft (40.8 m) and a deck 37 ft wide.

Who owns State Route 16 over Cosumnes River?

It is owned by the State Highway Agency.