US Bridges

US421S over Norfolk Southern RR

Good

Chatham County, North Carolina · 0.3 Mi. N. Jct. SR1007 · Structure no. 000000000370506

Built
2008
17 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
7,500
2022 count
Owner
State
State Highway Agency

About this bridge

US421S over Norfolk Southern RR is a prestressed concrete continuous stringer/multi-beam or girder carrying US421S over Norfolk Southern RR in Chatham County, North Carolina. It was built in 2008, so it is 17 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,500 vehicles a day, roughly 14% of them trucks, projected to reach 15,000 by 2040. The structure is 133 ft (40.5 m) long and 38 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS421S
CrossesNorfolk Southern RR
Location0.3 Mi. N. Jct. SR1007
RouteU.S. Route 421
CountyChatham County
StateNorth Carolina
Coordinates35.55838, -79.29225
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length133 ft (40.5 m)
Longest span53 ft (16.1 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2022)
Projected traffic15,000 by 2040
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US421S over Norfolk Southern RR built?

It was built in 2008, making it 17 years old in 2025.

What condition is US421S over Norfolk Southern RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does US421S over Norfolk Southern RR carry?

About 7,500 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US421S over Norfolk Southern RR?

The structure is 133 ft (40.5 m) long with a longest span of 53 ft (16.1 m) and a deck 38 ft wide.

Who owns US421S over Norfolk Southern RR?

It is owned by the State Highway Agency.