US Bridges

Auburn BLVD-S51 on over State Route 51

Fair

Sacramento County, California · 03-SAC-051-7.70-SAC · Structure no. 24 0124K

Built
1954
71 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
143 ft
2 main spans
Daily traffic
4,500
2013 count
Owner
State
State Highway Agency

About this bridge

Auburn BLVD-S51 on over State Route 51 is a concrete continuous box beam or girders - multiple carrying Auburn BLVD-S51 on over State Route 51 in Sacramento County, California. It was built in 1954, so it is 71 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 4,500 vehicles a day, roughly 2% of them trucks, projected to reach 5,256 by 2041. The structure is 143 ft (43.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesAuburn BLVD-S51 on
CrossesState Route 51
Location03-SAC-051-7.70-SAC
RouteState Highway 51
CountySacramento County
StateCalifornia
Coordinates38.6368, -121.38678
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span72 ft (21.9 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2013)
Projected traffic5,256 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Auburn BLVD-S51 on over State Route 51 built?

It was built in 1954, making it 71 years old in 2025.

What condition is Auburn BLVD-S51 on over State Route 51 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 November 2023.

How much traffic does Auburn BLVD-S51 on over State Route 51 carry?

About 4,500 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is Auburn BLVD-S51 on over State Route 51?

The structure is 143 ft (43.6 m) long with a longest span of 72 ft (21.9 m) and a deck 27 ft wide.

Who owns Auburn BLVD-S51 on over State Route 51?

It is owned by the State Highway Agency.