US Bridges

Sam Brown Road over Lake Creek

Fair

Lane County, Oregon · 0020 MI North Blachly · Structure no. 39C378364700018

Built
1992
33 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
29
2020 count
Owner
County
County Highway Agency

About this bridge

Sam Brown Road over Lake Creek is a prestressed concrete slab carrying Sam Brown Road over Lake Creek in Lane County, Oregon. It was built in 1992, so it is 33 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 29 vehicles a day, projected to reach 33 by 2025. The structure is 71 ft (21.6 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSam Brown Road
CrossesLake Creek
Location0020 MI North Blachly
RouteCounty Highway C3647
CountyLane County
StateOregon
Coordinates44.19923, -123.54284
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span70 ft (21.3 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2020)
Projected traffic33 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Sam Brown Road over Lake Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Sam Brown Road over Lake 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 2023.

How much traffic does Sam Brown Road over Lake Creek carry?

About 29 vehicles per day (2020 count).

How long is Sam Brown Road over Lake Creek?

The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 16 ft wide.

Who owns Sam Brown Road over Lake Creek?

It is owned by the County Highway Agency.