US Bridges

American DR over Muddy Creek

Fair

Linn County, Oregon · 0197 Miles West of Halsey · Structure no. 12312 000300197

Built
1993
32 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
101 ft
2 main spans
Daily traffic
3,605
2021 count
Owner
County
County Highway Agency

About this bridge

American DR over Muddy Creek is a prestressed concrete slab carrying American DR over Muddy Creek in Linn County, Oregon. It was built in 1993, so it is 32 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 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 3,605 vehicles a day, roughly 15% of them trucks, projected to reach 5,047 by 2041. The structure is 101 ft (30.8 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAmerican DR
CrossesMuddy Creek
Location0197 Miles West of Halsey
RouteCounty Highway A0476
CountyLinn County
StateOregon
Coordinates44.39305, -123.14744
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70 US tons
Inventory rating54.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 25 or greater
Structure length101 ft (30.8 m)
Longest span50 ft (15.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,605 (2021)
Projected traffic5,047 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 American DR over Muddy Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is American DR over Muddy 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 May 2023.

How much traffic does American DR over Muddy Creek carry?

About 3,605 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is American DR over Muddy Creek?

The structure is 101 ft (30.8 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns American DR over Muddy Creek?

It is owned by the County Highway Agency.