US Bridges

State Route 1 over Brotherhood Way

Fair

San Francisco County, California · 04-SF-001-R0.31-SF · Structure no. 34 0044

Built
1952
73 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
128 ft
2 main spans
Daily traffic
122,000
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Brotherhood Way is a concrete continuous slab carrying State Route 1 over Brotherhood Way in San Francisco 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 122,000 vehicles a day, roughly 3% of them trucks, projected to reach 155,787 by 2044. The structure is 128 ft (39 m) long and 126 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesState Route 1
CrossesBrotherhood Way
Location04-SF-001-R0.31-SF
RouteState Highway 1
CountySan Francisco County
StateCalifornia
Coordinates37.71259, -122.47106
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length128 ft (39 m)
Longest span54 ft (16.5 m)
Deck width126 ft (38.5 m)
Roadway width96 ft (29.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122,000 (2019)
Projected traffic155,787 by 2044
Trucks3%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 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 State Route 1 over Brotherhood Way built?

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

What condition is State Route 1 over Brotherhood Way 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 December 2023.

How much traffic does State Route 1 over Brotherhood Way carry?

About 122,000 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is State Route 1 over Brotherhood Way?

The structure is 128 ft (39 m) long with a longest span of 54 ft (16.5 m) and a deck 126 ft wide.

Who owns State Route 1 over Brotherhood Way?

It is owned by the State Highway Agency.