US Bridges

Richardson Gap RD over Crabtree Creek

Fair

Linn County, Oregon · 033MI S ST HWY 226 · Structure no. 12890A002500332

Built
1987
38 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
121 ft
1 main span
Daily traffic
1,648
2021 count
Owner
County
County Highway Agency

About this bridge

Richardson Gap RD over Crabtree Creek is a prestressed concrete tee beam carrying Richardson Gap RD over Crabtree Creek in Linn County, Oregon. It was built in 1987, so it is 38 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 1,648 vehicles a day, roughly 10% of them trucks, projected to reach 2,318 by 2041. The structure is 121 ft (36.9 m) long and 35 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesRichardson Gap RD
CrossesCrabtree Creek
Location033MI S ST HWY 226
RouteCounty Highway A0489
CountyLinn County
StateOregon
Coordinates44.65815, -122.80435
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length121 ft (36.9 m)
Longest span120 ft (36.6 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,648 (2021)
Projected traffic2,318 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Richardson Gap RD over Crabtree Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Richardson Gap RD over Crabtree 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 June 2023.

How much traffic does Richardson Gap RD over Crabtree Creek carry?

About 1,648 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Richardson Gap RD over Crabtree Creek?

The structure is 121 ft (36.9 m) long with a longest span of 120 ft (36.6 m) and a deck 35 ft wide.

Who owns Richardson Gap RD over Crabtree Creek?

It is owned by the County Highway Agency.