US Bridges

US1 Sbl over S.C.L.R.R.

Good

Wake County, North Carolina · 1.3MI.S. of US1-A · Structure no. 000000001830560

Built
1981
44 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
224 ft
3 main spans
Daily traffic
45,500
2021 count
Owner
State
State Highway Agency

About this bridge

US1 Sbl over S.C.L.R.R. is a steel stringer/multi-beam or girder carrying US1 Sbl over S.C.L.R.R. in Wake County, North Carolina. It was built in 1981, so it is 44 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 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 45,500 vehicles a day, roughly 12% of them trucks, projected to reach 91,000 by 2040. The structure is 224 ft (68.2 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

No coordinates are recorded for this structure.

CarriesUS1 Sbl
CrossesS.C.L.R.R.
Location1.3MI.S. of US1-A
RouteU.S. Route 1
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating60 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length224 ft (68.2 m)
Longest span72 ft (21.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,500 (2021)
Projected traffic91,000 by 2040
Trucks12%
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 US1 Sbl over S.C.L.R.R. built?

It was built in 1981, making it 44 years old in 2025.

What condition is US1 Sbl over S.C.L.R.R. 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 2023.

How much traffic does US1 Sbl over S.C.L.R.R. carry?

About 45,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US1 Sbl over S.C.L.R.R.?

The structure is 224 ft (68.2 m) long with a longest span of 72 ft (21.9 m) and a deck 43 ft wide.

Who owns US1 Sbl over S.C.L.R.R.?

It is owned by the State Highway Agency.