US Bridges

Road 108 over ST Johns River

Fair

Tulare County, California · 0.75 MI S of Ave 328 · Structure no. 46C0420

Built
1964
61 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
201 ft
6 main spans
Daily traffic
2,000
1982 count
Owner
County
County Highway Agency

About this bridge

Road 108 over ST Johns River is a concrete continuous slab carrying Road 108 over ST Johns River in Tulare County, California. It was built in 1964, so it is 61 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 2,000 vehicles a day, roughly 5% of them trucks, projected to reach 2,781 by 2042. The structure is 201 ft (61.3 m) long and 29 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesRoad 108
CrossesST Johns River
Location0.75 MI S of Ave 328
RouteCounty Highway 0
CountyTulare County
StateCalifornia
Coordinates36.3743, -119.33214
Functional classRural Major Collector

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 inspectionMarch 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length201 ft (61.3 m)
Longest span36 ft (11 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (1982)
Projected traffic2,781 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Road 108 over ST Johns River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Road 108 over ST Johns River 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 March 2024.

How much traffic does Road 108 over ST Johns River carry?

About 2,000 vehicles per day (1982 count), of which roughly 5% are trucks.

How long is Road 108 over ST Johns River?

The structure is 201 ft (61.3 m) long with a longest span of 36 ft (11 m) and a deck 29 ft wide.

Who owns Road 108 over ST Johns River?

It is owned by the County Highway Agency.