US Bridges

1NB-101S Connector over Lincoln Blvd

Fair

San Francisco County, California · 04-SF-001-7.00-SF · Structure no. 34 0160G

Built
2012
13 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
542 ft
5 main spans
Daily traffic
7,400
2017 count
Owner
State
State Highway Agency

About this bridge

1NB-101S Connector over Lincoln Blvd is a prestressed concrete continuous box beam or girders - single or spread carrying 1NB-101S Connector over Lincoln Blvd in San Francisco County, California. It was built in 2012, so it is 13 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 7,400 vehicles a day, roughly 2% of them trucks, projected to reach 11,222 by 2041. The structure is 542 ft (165.2 m) long and 43 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Carries1NB-101S Connector
CrossesLincoln Blvd
Location04-SF-001-7.00-SF
RouteState Highway 1
Coordinates37.80172, -122.4692
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length542 ft (165.2 m)
Longest span120 ft (36.6 m)
Deck width43 ft (13 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2017)
Projected traffic11,222 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 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 1NB-101S Connector over Lincoln Blvd built?

It was built in 2012, making it 13 years old in 2025.

What condition is 1NB-101S Connector over Lincoln Blvd 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 March 2023.

How much traffic does 1NB-101S Connector over Lincoln Blvd carry?

About 7,400 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is 1NB-101S Connector over Lincoln Blvd?

The structure is 542 ft (165.2 m) long with a longest span of 120 ft (36.6 m) and a deck 43 ft wide.

Who owns 1NB-101S Connector over Lincoln Blvd?

It is owned by the State Highway Agency.