US Bridges

County RD 88 over Bryant Br/Rock Creek

Good

Coos County, Oregon · T30S-R11W-S14 · Structure no. 17977 008800290

Built
1995
30 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
89
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 88 over Bryant Br/Rock Creek is a prestressed concrete slab carrying County RD 88 over Bryant Br/Rock Creek in Coos County, Oregon. It was built in 1995, so it is 30 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 89 vehicles a day, roughly 1% of them trucks, projected to reach 101 by 2025. The structure is 72 ft (21.9 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD 88
CrossesBryant Br/Rock Creek
LocationT30S-R11W-S14
RouteCounty Highway C0088
StateOregon
Coordinates42.97017, -123.97029
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
Deck7 GoodSome minor problems.
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment6: Equal to present minimum criteria
Operating rating62.8 US tons
Inventory rating48.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length72 ft (21.9 m)
Longest span71 ft (21.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89 (2020)
Projected traffic101 by 2025
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$369,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 88 over Bryant Br/Rock Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is County RD 88 over Bryant Br/Rock 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 September 2024.

How much traffic does County RD 88 over Bryant Br/Rock Creek carry?

About 89 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is County RD 88 over Bryant Br/Rock Creek?

The structure is 72 ft (21.9 m) long with a longest span of 71 ft (21.6 m) and a deck 24 ft wide.

Who owns County RD 88 over Bryant Br/Rock Creek?

It is owned by the County Highway Agency.