US Bridges

Mossy Lane RD563 over Ollalie Creek

Good

Lincoln County, Oregon · 055 MI E of Newport · Structure no. 12096 56301 035

Built
1963
62 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Mossy Lane RD563 over Ollalie Creek is a prestressed concrete slab carrying Mossy Lane RD563 over Ollalie Creek in Lincoln County, Oregon. It was built in 1963, so it is 62 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, projected to reach 10 by 2040. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMossy Lane RD563
CrossesOllalie Creek
Location055 MI E of Newport
RouteCounty Highway 0
StateOregon
Coordinates44.64298, -123.92892
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic10 by 2040
Trucks0%
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 Mossy Lane RD563 over Ollalie Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Mossy Lane RD563 over Ollalie Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Mossy Lane RD563 over Ollalie Creek carry?

About 10 vehicles per day (2020 count).

How long is Mossy Lane RD563 over Ollalie Creek?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Mossy Lane RD563 over Ollalie Creek?

It is owned by the County Highway Agency.