US Bridges

Hamm Road over Coyote Creek

Fair

Lane County, Oregon · 10.0 MI W I5 Creswell Ext · Structure no. 39C40 213000180

Built
1975
50 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
57 ft
2 main spans
Daily traffic
787
2020 count
Owner
County
County Highway Agency

About this bridge

Hamm Road over Coyote Creek is a prestressed concrete slab carrying Hamm Road over Coyote Creek in Lane County, Oregon. It was built in 1975, so it is 50 years old, older 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 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 787 vehicles a day, roughly 10% of them trucks, projected to reach 877 by 2025. The structure is 57 ft (17.4 m) long and 24 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesHamm Road
CrossesCoyote Creek
Location10.0 MI W I5 Creswell Ext
RouteCounty Highway A0448
CountyLane County
StateOregon
Coordinates43.88953, -123.19926
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span28 ft (8.5 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic787 (2020)
Projected traffic877 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 Hamm Road over Coyote Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Hamm 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 Hamm Road over Coyote Creek carry?

About 787 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Hamm Road over Coyote Creek?

The structure is 57 ft (17.4 m) long with a longest span of 28 ft (8.5 m) and a deck 24 ft wide.

Who owns Hamm Road over Coyote Creek?

It is owned by the County Highway Agency.