SR 120 WB over Guthmiller Road
PoorSan Joaquin County, California · 10-SJ-120-R1.33 · Structure no. 29 0271L
- Built
- 1980
- 45 years old
- Condition
- Poor
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 119 ft
- 1 main span
- Daily traffic
- 37,500
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
SR 120 WB over Guthmiller Road is a prestressed concrete box beam or girders - multiple carrying SR 120 WB over Guthmiller Road in San Joaquin County, California. It was built in 1980, so it is 45 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 37,500 vehicles a day, roughly 19% of them trucks, projected to reach 56,675 by 2045. The structure is 119 ft (36.3 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 120 WB over Guthmiller Road built?
It was built in 1980, making it 45 years old in 2025.
What condition is SR 120 WB over Guthmiller Road in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.
How much traffic does SR 120 WB over Guthmiller Road carry?
About 37,500 vehicles per day (2009 count), of which roughly 19% are trucks.
How long is SR 120 WB over Guthmiller Road?
The structure is 119 ft (36.3 m) long with a longest span of 118 ft (35.9 m) and a deck 42 ft wide.
Who owns SR 120 WB over Guthmiller Road?
It is owned by the State Highway Agency.