US Bridges

CR-640 over CSX R/R

Fair

Polk County, Florida · 0.7 MI East of SR-37 · Structure no. 160090

Built
1969
56 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
128 ft
3 main spans
Daily traffic
4,000
2023 count
Owner
County
County Highway Agency

About this bridge

CR-640 over CSX R/R is a prestressed concrete stringer/multi-beam or girder carrying CR-640 over CSX R/R in Polk County, Florida. It was built in 1969, so it is 56 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 6 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 4,000 vehicles a day, roughly 14% of them trucks, projected to reach 6,940 by 2042. The structure is 128 ft (39 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCR-640
CrossesCSX R/R
Location0.7 MI East of SR-37
RouteCounty Highway 640
CountyPolk County
StateFlorida
Coordinates27.84995, -81.96631
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.7 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span48 ft (14.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2023)
Projected traffic6,940 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR-640 over CSX R/R built?

It was built in 1969, making it 56 years old in 2025.

What condition is CR-640 over CSX R/R 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 September 2023.

How much traffic does CR-640 over CSX R/R carry?

About 4,000 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is CR-640 over CSX R/R?

The structure is 128 ft (39 m) long with a longest span of 48 ft (14.6 m) and a deck 43 ft wide.

Who owns CR-640 over CSX R/R?

It is owned by the County Highway Agency.