US Bridges

Nfa 2145 (sa 0809) over Doolittle Branch

Fair

Cannon County, Tennessee · Near W00DBURY · Structure no. 08S44810003

Built
1986
39 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
55 ft
3 main spans
Daily traffic
813
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2145 (sa 0809) over Doolittle Branch is a concrete continuous culvert carrying Nfa 2145 (sa 0809) over Doolittle Branch in Cannon County, Tennessee. It was built in 1986, so it is 39 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 813 vehicles a day, roughly 3% of them trucks, projected to reach 1,280 by 2041. The structure is 55 ft (16.9 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNfa 2145 (sa 0809)
CrossesDoolittle Branch
LocationNear W00DBURY
RouteCounty Highway 2145
CountyCannon County
StateTennessee
Coordinates35.83928, -86.07182
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length55 ft (16.9 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic813 (2021)
Projected traffic1,280 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$398,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2145 (sa 0809) over Doolittle Branch built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa 2145 (sa 0809) over Doolittle Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Nfa 2145 (sa 0809) over Doolittle Branch carry?

About 813 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2145 (sa 0809) over Doolittle Branch?

The structure is 55 ft (16.9 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Nfa 2145 (sa 0809) over Doolittle Branch?

It is owned by the County Highway Agency.