US Bridges

Fire Hall Road over Rock Creek

Fair

Polk County, Oregon · 001 S of State HWY 18 · Structure no. 19973 068700014

Built
2006
19 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
158 ft
1 main span
Daily traffic
294
2020 count
Owner
County
County Highway Agency

About this bridge

Fire Hall Road over Rock Creek is a prestressed concrete tee beam carrying Fire Hall Road over Rock Creek in Polk County, Oregon. It was built in 2006, so it is 19 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 294 vehicles a day, roughly 10% of them trucks, projected to reach 437 by 2040. The structure is 158 ft (48.3 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFire Hall Road
CrossesRock Creek
Location001 S of State HWY 18
RouteCounty Highway C6807
StateOregon
Coordinates45.05633, -123.61952
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length158 ft (48.3 m)
Longest span158 ft (48.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic294 (2020)
Projected traffic437 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Fire Hall Road over Rock Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Fire Hall Road over Rock 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 August 2024.

How much traffic does Fire Hall Road over Rock Creek carry?

About 294 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Fire Hall Road over Rock Creek?

The structure is 158 ft (48.3 m) long with a longest span of 158 ft (48.3 m) and a deck 35 ft wide.

Who owns Fire Hall Road over Rock Creek?

It is owned by the County Highway Agency.