US Bridges

Fdr 96 over Duncan Creek

Fair

Placer County, California · S26 T15N R13E · Structure no. 051754000001000

Built
1954
71 years old
Condition
Fair
inspected September 2024
Type
Slab
Steel
Length
68 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 96 over Duncan Creek is a steel slab carrying Fdr 96 over Duncan Creek in Placer County, California. It was built in 1954, so it is 71 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 68 ft (20.7 m) long and 22 ft wide.

Location

Open in Google Maps
CarriesFdr 96
CrossesDuncan Creek
LocationS26 T15N R13E
RouteFederal Lands Road 96
CountyPlacer County
StateCalifornia
Coordinates39.12222, -120.49261
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating27.9 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span67 ft (20.4 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-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 Fdr 96 over Duncan Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Fdr 96 over Duncan 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 September 2024.

How much traffic does Fdr 96 over Duncan Creek carry?

About 50 vehicles per day (latest count).

How long is Fdr 96 over Duncan Creek?

The structure is 68 ft (20.7 m) long with a longest span of 67 ft (20.4 m) and a deck 22 ft wide.

Who owns Fdr 96 over Duncan Creek?

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