US Bridges

Nfa B003 (sa 7406) over Sulfur Fork Creek

Fair

Robertson County, Tennessee · 1.9 MI NW JCT SR11&SR49 · Structure no. 74S62790003

Built
1962
63 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
202 ft
4 main spans
Daily traffic
2,944
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa B003 (sa 7406) over Sulfur Fork Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa B003 (sa 7406) over Sulfur Fork Creek in Robertson County, Tennessee. It was built in 1962, so it is 63 years old, older 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 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 2,944 vehicles a day, roughly 13% of them trucks, projected to reach 4,368 by 2040. The structure is 202 ft (61.6 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa B003 (sa 7406)
CrossesSulfur Fork Creek
Location1.9 MI NW JCT SR11&SR49
RouteCounty Highway 0B003
CountyRobertson County
StateTennessee
Coordinates36.51645, -86.91315
Functional classUrban Local

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length202 ft (61.6 m)
Longest span50 ft (15.2 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,944 (2021)
Projected traffic4,368 by 2040
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$884,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B003 (sa 7406) over Sulfur Fork Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Nfa B003 (sa 7406) over Sulfur Fork Creek 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 May 2024.

How much traffic does Nfa B003 (sa 7406) over Sulfur Fork Creek carry?

About 2,944 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is Nfa B003 (sa 7406) over Sulfur Fork Creek?

The structure is 202 ft (61.6 m) long with a longest span of 50 ft (15.2 m) and a deck 29 ft wide.

Who owns Nfa B003 (sa 7406) over Sulfur Fork Creek?

It is owned by the County Highway Agency.