US Bridges

CR 340 over Suwannee River

FairPosted for load

Gilchrist County, Florida · 3 MI West of US 129 · Structure no. 310002

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Girder and Floorbeam System
Steel
Length
452 ft
3 main spans
Daily traffic
2,200
2024 count
Owner
County
County Highway Agency

About this bridge

CR 340 over Suwannee River is a steel girder and floorbeam system carrying CR 340 over Suwannee River in Gilchrist County, Florida. It was built in 1965, so it is 60 years old, older than the Florida average of 41.3 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. Its operating status is: posted for load restriction.

It carries about 2,200 vehicles a day, roughly 4% of them trucks, projected to reach 3,817 by 2042. The structure is 452 ft (137.8 m) long and 29 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesCR 340
CrossesSuwannee River
Location3 MI West of US 129
RouteCounty Highway 340
CountyGilchrist County
StateFlorida
Coordinates29.79583, -82.92
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38.1 US tons
Inventory rating24.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadUnknown
Structure length452 ft (137.8 m)
Longest span126 ft (38.4 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2024)
Projected traffic3,817 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was CR 340 over Suwannee River built?

It was built in 1965, making it 60 years old in 2025.

What condition is CR 340 over Suwannee 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 CR 340 over Suwannee River carry?

About 2,200 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is CR 340 over Suwannee River?

The structure is 452 ft (137.8 m) long with a longest span of 126 ft (38.4 m) and a deck 29 ft wide.

Who owns CR 340 over Suwannee River?

It is owned by the County Highway Agency.