US Bridges

Nfa 961 (sa 4109) over Bird Creek

Poor

Hickman County, Tennessee · 1.1 M South of Nunnelly · Structure no. 41F04700003

Built
1930
95 years old
Condition
Poor
inspected November 2023
Type
Culvert
Concrete Continuous
Length
82 ft
4 main spans
Daily traffic
252
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 961 (sa 4109) over Bird Creek is a concrete continuous culvert carrying Nfa 961 (sa 4109) over Bird Creek in Hickman County, Tennessee. It was built in 1930, so it is 95 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 252 vehicles a day, roughly 3% of them trucks, projected to reach 403 by 2042. The structure is 82 ft (25 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 961 (sa 4109)
CrossesBird Creek
Location1.1 M South of Nunnelly
RouteCounty Highway 961
CountyHickman County
StateTennessee
Coordinates35.8467, -87.47685
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 10
Structure length82 ft (25 m)
Longest span14 ft (4.3 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic252 (2021)
Projected traffic403 by 2042
Trucks3%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$928,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 961 (sa 4109) over Bird Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Nfa 961 (sa 4109) over Bird Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does Nfa 961 (sa 4109) over Bird Creek carry?

About 252 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 961 (sa 4109) over Bird Creek?

The structure is 82 ft (25 m) long with a longest span of 14 ft (4.3 m) and a deck 22 ft wide.

Who owns Nfa 961 (sa 4109) over Bird Creek?

It is owned by the County Highway Agency.