US Bridges

US117 over Great Swamp

Fair

Wilson County, North Carolina · 1.1 MI S SR 1637 · Structure no. 000000001950023

Built
1940
85 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
104 ft
3 main spans
Daily traffic
1,500
2022 count
Owner
State
State Highway Agency

About this bridge

US117 over Great Swamp is a concrete tee beam carrying US117 over Great Swamp in Wilson County, North Carolina. It was built in 1940, so it is 85 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 1,500 vehicles a day, roughly 8% of them trucks, projected to reach 3,000 by 2040. The structure is 104 ft (31.6 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS117
CrossesGreat Swamp
Location1.1 MI S SR 1637
RouteU.S. Route 117
CountyWilson County
StateNorth Carolina
Coordinates35.58788, -77.97318
Functional classRural Minor Arterial

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.
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 inspectionApril 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating26.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length104 ft (31.6 m)
Longest span34 ft (10.3 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2022)
Projected traffic3,000 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 US117 over Great Swamp built?

It was built in 1940, making it 85 years old in 2025.

What condition is US117 over Great Swamp 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 US117 over Great Swamp carry?

About 1,500 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US117 over Great Swamp?

The structure is 104 ft (31.6 m) long with a longest span of 34 ft (10.3 m) and a deck 36 ft wide.

Who owns US117 over Great Swamp?

It is owned by the State Highway Agency.