US Bridges

Nfa A645 over Crowson Creek

Fair

Lawrence County, Tennessee · 0.5M.N.SR15IN Lawrenceber · Structure no. 500A6450001

Built
1930
95 years old, rebuilt 1940
Condition
Fair
inspected June 2023
Type
Culvert
Concrete Continuous
Length
51 ft
3 main spans
Daily traffic
90
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A645 over Crowson Creek is a concrete continuous culvert carrying Nfa A645 over Crowson Creek in Lawrence County, Tennessee. It was built in 1930 and reconstructed in 1940, 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 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 90 vehicles a day, roughly 2% of them trucks, projected to reach 144 by 2042. The structure is 51 ft (15.5 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A645
CrossesCrowson Creek
Location0.5M.N.SR15IN Lawrenceber
RouteCity Street 645
CountyLawrence County
StateTennessee
Coordinates35.2437, -87.35619
Functional classUrban Local

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length51 ft (15.5 m)
Longest span15 ft (4.6 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2020)
Projected traffic144 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$140,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A645 over Crowson Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1940.

What condition is Nfa A645 over Crowson Creek 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 June 2023.

How much traffic does Nfa A645 over Crowson Creek carry?

About 90 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A645 over Crowson Creek?

The structure is 51 ft (15.5 m) long with a longest span of 15 ft (4.6 m) and a deck 20 ft wide.

Who owns Nfa A645 over Crowson Creek?

It is owned by the City or Municipal Highway Agency.