US Bridges

Hoefer Road over Overflow

Fair

Linn County, Oregon · 010MI West I5 · Structure no. 20221 030400116

Built
2007
18 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
232
2021 count
Owner
County
County Highway Agency

About this bridge

Hoefer Road over Overflow is a prestressed concrete slab carrying Hoefer Road over Overflow in Linn County, Oregon. It was built in 2007, so it is 18 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 232 vehicles a day, roughly 5% of them trucks, projected to reach 324 by 2041. The structure is 60 ft (18.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHoefer Road
CrossesOverflow
Location010MI West I5
RouteCounty Highway C0304
StateOregon
Coordinates44.72442, -123.07161
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.3 US tons
Inventory rating60.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic232 (2021)
Projected traffic324 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Hoefer Road over Overflow built?

It was built in 2007, making it 18 years old in 2025.

What condition is Hoefer Road over Overflow 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 October 2024.

How much traffic does Hoefer Road over Overflow carry?

About 232 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Hoefer Road over Overflow?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns Hoefer Road over Overflow?

It is owned by the County Highway Agency.