US Bridges

SR1636 over Little Tenn.Rvr.Overflow

Fair

Macon County, North Carolina · 0.1 MI.E.JCT.US23 US441 · Structure no. 000000001130241

Built
1951
74 years old, rebuilt 1979
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
3 main spans
Daily traffic
1,300
2022 count
Owner
State
State Highway Agency

About this bridge

SR1636 over Little Tenn.Rvr.Overflow is a steel stringer/multi-beam or girder carrying SR1636 over Little Tenn.Rvr.Overflow in Macon County, North Carolina. It was built in 1951 and reconstructed in 1979, so it is 74 years old, older than the North Carolina average of 38.7 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 1,300 vehicles a day, roughly 6% of them trucks, projected to reach 2,600 by 2040. The structure is 106 ft (32.3 m) long and 22 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR1636
CrossesLittle Tenn.Rvr.Overflow
Location0.1 MI.E.JCT.US23 US441
RouteState Highway 1636
Coordinates35.05784, -83.38471
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans3
Design loadUnknown
Structure length106 ft (32.3 m)
Longest span35 ft (10.6 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2022)
Projected traffic2,600 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1636 over Little Tenn.Rvr.Overflow built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1979.

What condition is SR1636 over Little Tenn.Rvr.Overflow 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 November 2024.

How much traffic does SR1636 over Little Tenn.Rvr.Overflow carry?

About 1,300 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1636 over Little Tenn.Rvr.Overflow?

The structure is 106 ft (32.3 m) long with a longest span of 35 ft (10.6 m) and a deck 22 ft wide.

Who owns SR1636 over Little Tenn.Rvr.Overflow?

It is owned by the State Highway Agency.