US Bridges

Sims Mtn. over Hazel Creek

Fair

Shasta County, California · No Data Entered · Structure no. 051459000001095

Built
1955
70 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
72 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Sims Mtn. over Hazel Creek is a steel stringer/multi-beam or girder carrying Sims Mtn. over Hazel Creek in Shasta County, California. It was built in 1955, so it is 70 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 72 ft (22 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesSims Mtn.
CrossesHazel Creek
LocationNo Data Entered
RouteFederal Lands Road 0
CountyShasta County
StateCalifornia
Coordinates41.05733, -122.35612
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length72 ft (22 m)
Longest span69 ft (21 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Sims Mtn. over Hazel Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Sims Mtn. over Hazel 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 February 2024.

How much traffic does Sims Mtn. over Hazel Creek carry?

About 50 vehicles per day (latest count).

How long is Sims Mtn. over Hazel Creek?

The structure is 72 ft (22 m) long with a longest span of 69 ft (21 m) and a deck 16 ft wide.

Who owns Sims Mtn. over Hazel Creek?

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