US Bridges

FSR 42B over Silver Creek

Good

Cochise County, Arizona · 3.4 MI W/O Portal Fire & · Structure no. 030501000015803

Built
2012
13 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
50
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

FSR 42B over Silver Creek is a prestressed concrete slab carrying FSR 42B over Silver Creek in Cochise County, Arizona. It was built in 2012, so it is 13 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 99 by 2040. The structure is 35 ft (10.7 m) long and 16 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesFSR 42B
CrossesSilver Creek
Location3.4 MI W/O Portal Fire &
RouteFederal Lands Road 42-B
StateArizona
Coordinates31.93188, -109.18922
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length35 ft (10.7 m)
Longest span34 ft (10.3 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2021)
Projected traffic99 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FSR 42B over Silver Creek built?

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

What condition is FSR 42B over Silver Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does FSR 42B over Silver Creek carry?

About 50 vehicles per day (2021 count).

How long is FSR 42B over Silver Creek?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.3 m) and a deck 16 ft wide.

Who owns FSR 42B over Silver Creek?

It is owned by the U.S. Forest Service.