US Bridges

Squaw Flat Road over Buck Creek

Fair

Klamath County, Oregon · 007 MI N of HWY 140 · Structure no. 35C343110101570

Built
1982
43 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
136
2020 count
Owner
County
County Highway Agency

About this bridge

Squaw Flat Road over Buck Creek is a prestressed concrete slab carrying Squaw Flat Road over Buck Creek in Klamath County, Oregon. It was built in 1982, so it is 43 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 136 vehicles a day, roughly 10% of them trucks, projected to reach 146 by 2025. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSquaw Flat Road
CrossesBuck Creek
Location007 MI N of HWY 140
RouteCounty Highway C1101
StateOregon
Coordinates42.27833, -121.48667
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136 (2020)
Projected traffic146 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Squaw Flat Road over Buck Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Squaw Flat Road over Buck 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 March 2023.

How much traffic does Squaw Flat Road over Buck Creek carry?

About 136 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Squaw Flat Road over Buck Creek?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns Squaw Flat Road over Buck Creek?

It is owned by the County Highway Agency.