US Bridges

Gap Road over Tub Run Creek

Fair

Linn County, Oregon · 068 Miles So Brownsville · Structure no. 15378 001500378

Built
1974
51 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
340
2021 count
Owner
County
County Highway Agency

About this bridge

Gap Road over Tub Run Creek is a prestressed concrete slab carrying Gap Road over Tub Run Creek in Linn County, Oregon. It was built in 1974, so it is 51 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 340 vehicles a day, roughly 5% of them trucks, projected to reach 390 by 2041. The structure is 33 ft (10.1 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesGap Road
CrossesTub Run Creek
Location068 Miles So Brownsville
RouteCounty Highway C0015
StateOregon
Coordinates44.29328, -122.99418
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic340 (2021)
Projected traffic390 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed0.6 mi (1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gap Road over Tub Run Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Gap Road over Tub Run 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 Gap Road over Tub Run Creek carry?

About 340 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Gap Road over Tub Run Creek?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns Gap Road over Tub Run Creek?

It is owned by the County Highway Agency.