US Bridges

Rowland Road over Little Muddy Creek

Fair

Linn County, Oregon · 0001 MI N JCT CR 224 · Structure no. 12463 051500262

Built
1964
61 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
284 ft
7 main spans
Daily traffic
216
2021 count
Owner
County
County Highway Agency

About this bridge

Rowland Road over Little Muddy Creek is a prestressed concrete slab carrying Rowland Road over Little Muddy Creek in Linn County, Oregon. It was built in 1964, so it is 61 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 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 216 vehicles a day, roughly 10% of them trucks, projected to reach 309 by 2041. The structure is 284 ft (86.6 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesRowland Road
CrossesLittle Muddy Creek
Location0001 MI N JCT CR 224
RouteCounty Highway C0515
StateOregon
Coordinates44.3173, -123.07742
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 protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans7
Design loadHS 20
Structure length284 ft (86.6 m)
Longest span40 ft (12.2 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic216 (2021)
Projected traffic309 by 2041
Trucks10%
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 Rowland Road over Little Muddy Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Rowland Road over Little 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 Rowland Road over Little Muddy Creek carry?

About 216 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Rowland Road over Little Muddy Creek?

The structure is 284 ft (86.6 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.

Who owns Rowland Road over Little Muddy Creek?

It is owned by the County Highway Agency.