US Bridges

Nfa 1911 over Shoal Branch

Good

Williamson County, Tennessee · 5.8 MI SE JCT SR46&SR100 · Structure no. 94019110001

Built
1995
30 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
48
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1911 over Shoal Branch is a prestressed concrete box beam or girders - single or spread carrying Nfa 1911 over Shoal Branch in Williamson County, Tennessee. It was built in 1995, so it is 30 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 48 vehicles a day, roughly 2% of them trucks, projected to reach 77 by 2042. The structure is 50 ft (15.2 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa 1911
CrossesShoal Branch
Location5.8 MI SE JCT SR46&SR100
RouteCounty Highway 1911
Coordinates35.852, -87.18333
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating16.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2021)
Projected traffic77 by 2042
Trucks2%
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 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 Nfa 1911 over Shoal Branch built?

It was built in 1995, making it 30 years old in 2025.

What condition is Nfa 1911 over Shoal Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Nfa 1911 over Shoal Branch carry?

About 48 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Nfa 1911 over Shoal Branch?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Nfa 1911 over Shoal Branch?

It is owned by the County Highway Agency.