US Bridges

Nfa 957 (sa 2219) over Spencers Mill RD / I40

Fair

Dickson County, Tennessee · 3 M. E. Williamson Co. LN · Structure no. 22I00400015

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
296 ft
4 main spans
Daily traffic
980
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 957 (sa 2219) over Spencers Mill RD / I40 is a steel continuous stringer/multi-beam or girder carrying Nfa 957 (sa 2219) over Spencers Mill RD / I40 in Dickson County, Tennessee. It was built in 1963, so it is 62 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 980 vehicles a day, roughly 1% of them trucks, projected to reach 1,760 by 2040. The structure is 296 ft (90.2 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 957 (sa 2219)
CrossesSpencers Mill RD / I40
Location3 M. E. Williamson Co. LN
RouteCounty Highway 957
CountyDickson County
StateTennessee
Coordinates36.01753, -87.24194
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length296 ft (90.2 m)
Longest span87 ft (26.5 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic980 (2021)
Projected traffic1,760 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$862,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 957 (sa 2219) over Spencers Mill RD / I40 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Nfa 957 (sa 2219) over Spencers Mill RD / I40 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 April 2024.

How much traffic does Nfa 957 (sa 2219) over Spencers Mill RD / I40 carry?

About 980 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 957 (sa 2219) over Spencers Mill RD / I40?

The structure is 296 ft (90.2 m) long with a longest span of 87 ft (26.5 m) and a deck 29 ft wide.

Who owns Nfa 957 (sa 2219) over Spencers Mill RD / I40?

It is owned by the State Highway Agency.