US Bridges

Nfa A143 348165M over CSX Railroad

Good

Montgomery County, Tennessee · 0.5 M. Ne. St. Bethlehem. · Structure no. 630A1430001

Built
1988
37 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
166 ft
3 main spans
Daily traffic
2,270
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A143 348165M over CSX Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A143 348165M over CSX Railroad in Montgomery County, Tennessee. It was built in 1988, so it is 37 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 2,270 vehicles a day, roughly 2% of them trucks, projected to reach 3,632 by 2040. The structure is 166 ft (50.6 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNfa A143 348165M
CrossesCSX Railroad
Location0.5 M. Ne. St. Bethlehem.
RouteCity Street 143
CountyMontgomery County
StateTennessee
Coordinates36.56587, -87.30582
Functional classUrban Local

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length166 ft (50.6 m)
Longest span62 ft (18.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,270 (2020)
Projected traffic3,632 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 A143 348165M over CSX Railroad built?

It was built in 1988, making it 37 years old in 2025.

What condition is Nfa A143 348165M 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 October 2024.

How much traffic does Nfa A143 348165M over CSX Railroad carry?

About 2,270 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A143 348165M over CSX Railroad?

The structure is 166 ft (50.6 m) long with a longest span of 62 ft (18.9 m) and a deck 32 ft wide.

Who owns Nfa A143 348165M over CSX Railroad?

It is owned by the City or Municipal Highway Agency.