US Bridges

Atlantic ST over Antelope Creek

Fair

Placer County, California · W/O Faith Home Road · Structure no. 19C0020

Built
1989
36 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
25,330
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

Atlantic ST over Antelope Creek is a prestressed concrete box beam or girders - multiple carrying Atlantic ST over Antelope Creek in Placer County, California. It was built in 1989, so it is 36 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 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 25,330 vehicles a day, roughly 1% of them trucks, projected to reach 34,801 by 2044. The structure is 78 ft (23.9 m) long and 100 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAtlantic ST
CrossesAntelope Creek
LocationW/O Faith Home Road
RouteCity Street 0
Coordinates38.75797, -121.26575
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length78 ft (23.9 m)
Longest span76 ft (23.1 m)
Deck width100 ft (30.4 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,330 (2003)
Projected traffic34,801 by 2044
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Atlantic ST over Antelope Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Atlantic ST over Antelope 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 June 2024.

How much traffic does Atlantic ST over Antelope Creek carry?

About 25,330 vehicles per day (2003 count), of which roughly 1% are trucks.

How long is Atlantic ST over Antelope Creek?

The structure is 78 ft (23.9 m) long with a longest span of 76 ft (23.1 m) and a deck 100 ft wide.

Who owns Atlantic ST over Antelope Creek?

It is owned by the City or Municipal Highway Agency.