US Bridges

State Route 259 SB over Highland Avenue

Fair

San Bernardino County, California · 08-SBD-259-R0.49-SBD · Structure no. 54 0761L

Built
1968
57 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
2 main spans
Daily traffic
38,000
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 259 SB over Highland Avenue is a prestressed concrete stringer/multi-beam or girder carrying State Route 259 SB over Highland Avenue in San Bernardino County, California. It was built in 1968, so it is 57 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 38,000 vehicles a day, roughly 4% of them trucks, projected to reach 46,061 by 2042. The structure is 143 ft (43.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 259 SB
CrossesHighland Avenue
Location08-SBD-259-R0.49-SBD
RouteState Highway 259
CountySan Bernardino County
StateCalifornia
Coordinates34.13584, -117.30271
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span70 ft (21.3 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,000 (2020)
Projected traffic46,061 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 259 SB over Highland Avenue built?

It was built in 1968, making it 57 years old in 2025.

What condition is State Route 259 SB over Highland Avenue 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 November 2023.

How much traffic does State Route 259 SB over Highland Avenue carry?

About 38,000 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is State Route 259 SB over Highland Avenue?

The structure is 143 ft (43.6 m) long with a longest span of 70 ft (21.3 m) and a deck 41 ft wide.

Who owns State Route 259 SB over Highland Avenue?

It is owned by the State Highway Agency.