US Bridges

Nfa 842 350386P over CSX Railroad

Good

Williamson County, Tennessee · 4.2 MI SW JCT SR11&SR16 · Structure no. 94S61830001

Built
1985
40 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
149 ft
3 main spans
Daily traffic
2,309
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 842 350386P over CSX Railroad is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa 842 350386P over CSX Railroad in Williamson County, Tennessee. It was built in 1985, so it is 40 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 2,309 vehicles a day, roughly 3% of them trucks, projected to reach 3,037 by 2042. The structure is 149 ft (45.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 842 350386P
CrossesCSX Railroad
Location4.2 MI SW JCT SR11&SR16
RouteCounty Highway 842
CountyWilliamson County
StateTennessee
Coordinates35.7522, -86.69825
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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length149 ft (45.4 m)
Longest span47 ft (14.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,309 (2021)
Projected traffic3,037 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 842 350386P over CSX Railroad built?

It was built in 1985, making it 40 years old in 2025.

What condition is Nfa 842 350386P over CSX Railroad 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 April 2023.

How much traffic does Nfa 842 350386P over CSX Railroad carry?

About 2,309 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 842 350386P over CSX Railroad?

The structure is 149 ft (45.4 m) long with a longest span of 47 ft (14.3 m) and a deck 28 ft wide.

Who owns Nfa 842 350386P over CSX Railroad?

It is owned by the County Highway Agency.