US Bridges

Lorenz Street over Middle Weaver Creek

Fair

Trinity County, California · 100 Ft S of SR 299 · Structure no. 05C0036

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
3 main spans
Daily traffic
125
2008 count
Owner
County
County Highway Agency

About this bridge

Lorenz Street over Middle Weaver Creek is a steel stringer/multi-beam or girder carrying Lorenz Street over Middle Weaver Creek in Trinity County, California. It was built in 1950, so it is 75 years old, older 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 5 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 125 vehicles a day, roughly 2% of them trucks, projected to reach 134 by 2042. The structure is 25 ft (7.6 m) long and 16 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesLorenz Street
CrossesMiddle Weaver Creek
Location100 Ft S of SR 299
RouteCounty Highway 0
Coordinates40.73098, -122.94026
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckSteel plate
Main spans3
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2008)
Projected traffic134 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lorenz Street over Middle Weaver Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Lorenz Street over Middle Weaver 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 2023.

How much traffic does Lorenz Street over Middle Weaver Creek carry?

About 125 vehicles per day (2008 count), of which roughly 2% are trucks.

How long is Lorenz Street over Middle Weaver Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 16 ft wide.

Who owns Lorenz Street over Middle Weaver Creek?

It is owned by the County Highway Agency.