US Bridges

SR311 WB Ramp over Colonial Pipeline

Fair

Bradley County, Tennessee · 1/2 Mi. East OFI-75 · Structure no. 06SR3110003

Built
2017
8 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
21,412
2021 count
Owner
State
State Highway Agency

About this bridge

SR311 WB Ramp over Colonial Pipeline is a prestressed concrete stringer/multi-beam or girder carrying SR311 WB Ramp over Colonial Pipeline in Bradley County, Tennessee. It was built in 2017, so it is 8 years old, younger than the Tennessee average of 47.4 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 21,412 vehicles a day, roughly 7% of them trucks, projected to reach 33,686 by 2041. The structure is 120 ft (36.6 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSR311 WB Ramp
CrossesColonial Pipeline
Location1/2 Mi. East OFI-75
RouteU.S. Route 64
Coordinates35.14927, -84.93605
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span120 ft (36.6 m)
Deck width56 ft (17.2 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,412 (2021)
Projected traffic33,686 by 2041
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR311 WB Ramp over Colonial Pipeline built?

It was built in 2017, making it 8 years old in 2025.

What condition is SR311 WB Ramp over Colonial Pipeline 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 August 2023.

How much traffic does SR311 WB Ramp over Colonial Pipeline carry?

About 21,412 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR311 WB Ramp over Colonial Pipeline?

The structure is 120 ft (36.6 m) long with a longest span of 120 ft (36.6 m) and a deck 56 ft wide.

Who owns SR311 WB Ramp over Colonial Pipeline?

It is owned by the State Highway Agency.