US Bridges

Nfa A236 over Spring Creek

FairPosted for load

Montgomery County, Tennessee · 3.75 M. N. St. Bethlehem. · Structure no. 630A2360001

Built
1965
60 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
154 ft
3 main spans
Daily traffic
9,811
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa A236 over Spring Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A236 over Spring Creek in Montgomery County, Tennessee. It was built in 1965, so it is 60 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 9,811 vehicles a day, roughly 3% of them trucks, projected to reach 15,698 by 2042. The structure is 154 ft (46.9 m) long and 29 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesNfa A236
CrossesSpring Creek
Location3.75 M. N. St. Bethlehem.
RouteCounty Highway 5580
CountyMontgomery County
StateTennessee
Coordinates36.61575, -87.28782
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating31.1 US tons
Inventory rating19.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length154 ft (46.9 m)
Longest span51 ft (15.5 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,811 (2021)
Projected traffic15,698 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$859,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A236 over Spring Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A236 over Spring 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 September 2024.

How much traffic does Nfa A236 over Spring Creek carry?

About 9,811 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa A236 over Spring Creek?

The structure is 154 ft (46.9 m) long with a longest span of 51 ft (15.5 m) and a deck 29 ft wide.

Who owns Nfa A236 over Spring Creek?

It is owned by the County Highway Agency.