US Bridges

SR1129 over I-40

Good

Burke County, North Carolina · 0.2 MI.N.JCT.SR1142 · Structure no. 000000000230037

Built
2001
24 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
212 ft
2 main spans
Daily traffic
3,100
2021 count
Owner
State
State Highway Agency

About this bridge

SR1129 over I-40 is a steel continuous stringer/multi-beam or girder carrying SR1129 over I-40 in Burke County, North Carolina. It was built in 2001, so it is 24 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 3,100 vehicles a day, roughly 6% of them trucks, projected to reach 6,200 by 2040. The structure is 212 ft (64.6 m) long and 58 ft wide.

CarriesSR1129
CrossesI-40
Location0.2 MI.N.JCT.SR1142
RouteState Highway 1129
Coordinates35.69047, -81.84087
Functional classRural Minor Collector

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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating54.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length212 ft (64.6 m)
Longest span108 ft (32.9 m)
Deck width58 ft (17.6 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2021)
Projected traffic6,200 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1129 over I-40 built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR1129 over I-40 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 August 2023.

How much traffic does SR1129 over I-40 carry?

About 3,100 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1129 over I-40?

The structure is 212 ft (64.6 m) long with a longest span of 108 ft (32.9 m) and a deck 58 ft wide.

Who owns SR1129 over I-40?

It is owned by the State Highway Agency.