US Bridges

Nfa A373 over Branch of Rock Creek

Good

Marshall County, Tennessee · 3.5 M N of Lewisburg · Structure no. 590A3730001

Built
1975
50 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
34 ft
2 main spans
Daily traffic
1,550
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A373 over Branch of Rock Creek is a concrete continuous culvert carrying Nfa A373 over Branch of Rock Creek in Marshall County, Tennessee. It was built in 1975, so it is 50 years old, older 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 1,550 vehicles a day, roughly 2% of them trucks, projected to reach 2,480 by 2040. The structure is 34 ft (10.3 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa A373
CrossesBranch of Rock Creek
Location3.5 M N of Lewisburg
RouteCounty Highway 373
Coordinates35.49822, -86.79792
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length34 ft (10.3 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2020)
Projected traffic2,480 by 2040
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$311,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A373 over Branch of Rock Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Nfa A373 over Branch of Rock Creek 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 2024.

How much traffic does Nfa A373 over Branch of Rock Creek carry?

About 1,550 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A373 over Branch of Rock Creek?

The structure is 34 ft (10.3 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Nfa A373 over Branch of Rock Creek?

It is owned by the County Highway Agency.