US Bridges

Simonsen Road over Coyote Creek

Fair

Lane County, Oregon · 040 MI SW Hadleyville · Structure no. 39C416409600017

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
76 ft
3 main spans
Daily traffic
65
2020 count
Owner
County
County Highway Agency

About this bridge

Simonsen Road over Coyote Creek is a prestressed concrete slab carrying Simonsen Road over Coyote Creek in Lane County, Oregon. It was built in 1978, so it is 47 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 65 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2025. The structure is 76 ft (23.2 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSimonsen Road
CrossesCoyote Creek
Location040 MI SW Hadleyville
RouteCounty Highway C4096
StateOregon
Coordinates43.91306, -123.26649
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2020)
Projected traffic75 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-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 Simonsen Road over Coyote Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Simonsen Road over Coyote 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 July 2024.

How much traffic does Simonsen Road over Coyote Creek carry?

About 65 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Simonsen Road over Coyote Creek?

The structure is 76 ft (23.2 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns Simonsen Road over Coyote Creek?

It is owned by the County Highway Agency.