US Bridges

May over Rattlesnake Creek

Poor

Trinity County, California · Forest Glen Sta. · Structure no. 051452000001005

Built
1959
66 years old
Condition
Poor
inspected March 2024
Type
Slab
Prestressed Concrete
Length
82 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

May over Rattlesnake Creek is a prestressed concrete slab carrying May over Rattlesnake Creek in Trinity County, California. It was built in 1959, so it is 66 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 82 ft (25 m) long and 12 ft wide.

Location

Open in Google Maps
CarriesMay
CrossesRattlesnake Creek
LocationForest Glen Sta.
RouteFederal Lands Road 1S39
CountyTrinity County
StateCalifornia
Coordinates40.37238, -123.30628
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation*: *
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating—
Inventory rating—

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length82 ft (25 m)
Longest span39 ft (11.8 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 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 May over Rattlesnake Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is May over Rattlesnake Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does May over Rattlesnake Creek carry?

About 50 vehicles per day (latest count).

How long is May over Rattlesnake Creek?

The structure is 82 ft (25 m) long with a longest span of 39 ft (11.8 m) and a deck 12 ft wide.

Who owns May over Rattlesnake Creek?

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