US Bridges

SR1311N over NC100

Good

Alamance County, North Carolina · 1.1 Mi. N. Jct. SR1309 · Structure no. 000000000010430

Built
2012
13 years old
Condition
Good
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
145 ft
1 main span
Daily traffic
11,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR1311N over NC100 is a steel stringer/multi-beam or girder carrying SR1311N over NC100 in Alamance County, North Carolina. It was built in 2012, so it is 13 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 11,500 vehicles a day, roughly 6% of them trucks, projected to reach 23,000 by 2040. The structure is 145 ft (44.1 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1311N
CrossesNC100
Location1.1 Mi. N. Jct. SR1309
RouteState Highway 1311
CountyAlamance County
StateNorth Carolina
Coordinates36.17476, -79.86723
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating65.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length145 ft (44.1 m)
Longest span141 ft (42.9 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2021)
Projected traffic23,000 by 2040
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1311N over NC100 built?

It was built in 2012, making it 13 years old in 2025.

What condition is SR1311N over NC100 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 April 2021.

How much traffic does SR1311N over NC100 carry?

About 11,500 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1311N over NC100?

The structure is 145 ft (44.1 m) long with a longest span of 141 ft (42.9 m) and a deck 36 ft wide.

Who owns SR1311N over NC100?

It is owned by the State Highway Agency.