US Bridges

IRR Frtbrg-Srwd RD over Reservation Creek

Fair

Mendocino County, California · 11 MI W/O US 101 · Structure no. 10C0180

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
167
2011 count
Owner
County
County Highway Agency

About this bridge

IRR Frtbrg-Srwd RD over Reservation Creek is a steel stringer/multi-beam or girder carrying IRR Frtbrg-Srwd RD over Reservation Creek in Mendocino County, California. It was built in 1985, so it is 40 years old, younger than the California average of 54.8 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 167 vehicles a day, roughly 4% of them trucks, projected to reach 265 by 2046. The structure is 24 ft (7.3 m) long and 18 ft wide. If it were closed, the detour would be 80.2 mi (129 km).

Location

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CarriesIRR Frtbrg-Srwd RD
CrossesReservation Creek
Location11 MI W/O US 101
RouteCounty Highway 0
CountyMendocino County
StateCalifornia
Coordinates39.53438, -123.4852
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating76.4 US tons
Inventory rating45.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic167 (2011)
Projected traffic265 by 2046
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed80.2 mi (129 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 IRR Frtbrg-Srwd RD over Reservation Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is IRR Frtbrg-Srwd RD over Reservation 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 IRR Frtbrg-Srwd RD over Reservation Creek carry?

About 167 vehicles per day (2011 count), of which roughly 4% are trucks.

How long is IRR Frtbrg-Srwd RD over Reservation Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 18 ft wide.

Who owns IRR Frtbrg-Srwd RD over Reservation Creek?

It is owned by the County Highway Agency.