US Bridges

Gates Bridge Rd. over Mad Creek

Good

Linn County, Oregon · 0.06 E. Mad Creek Rd. · Structure no. 22072 000 00007

Built
2013
12 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
114 ft
1 main span
Daily traffic
1,082
2021 count
Owner
County
County Highway Agency

About this bridge

Gates Bridge Rd. over Mad Creek is a prestressed concrete box beam or girders - multiple carrying Gates Bridge Rd. over Mad Creek in Linn County, Oregon. It was built in 2013, so it is 12 years old, younger 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 1,082 vehicles a day, roughly 1% of them trucks, projected to reach 1,858 by 2041. The structure is 114 ft (34.7 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesGates Bridge Rd.
CrossesMad Creek
Location0.06 E. Mad Creek Rd.
RouteCounty Highway 0
StateOregon
Coordinates44.75181, -122.39695
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.1 US tons
Inventory rating58.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length114 ft (34.7 m)
Longest span114 ft (34.7 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,082 (2021)
Projected traffic1,858 by 2041
Trucks1%
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 Gates Bridge Rd. over Mad Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is Gates Bridge Rd. over Mad 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 July 2023.

How much traffic does Gates Bridge Rd. over Mad Creek carry?

About 1,082 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Gates Bridge Rd. over Mad Creek?

The structure is 114 ft (34.7 m) long with a longest span of 114 ft (34.7 m) and a deck 36 ft wide.

Who owns Gates Bridge Rd. over Mad Creek?

It is owned by the County Highway Agency.