US Bridges

SR1105 over Laurel Branch

Good

Alleghany County, North Carolina · 50 FT.W.JCT.US21 · Structure no. 000000000050001

Built
2006
19 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
77 ft
2 main spans
Daily traffic
300
1995 count
Owner
State
State Highway Agency

About this bridge

SR1105 over Laurel Branch is a prestressed concrete slab carrying SR1105 over Laurel Branch in Alleghany County, North Carolina. It was built in 2006, so it is 19 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 300 vehicles a day, roughly 6% of them trucks, projected to reach 600 by 2040. The structure is 77 ft (23.4 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1105
CrossesLaurel Branch
Location50 FT.W.JCT.US21
RouteState Highway 1105
Coordinates36.42059, -81.00781
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating50.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length77 ft (23.4 m)
Longest span49 ft (14.9 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (1995)
Projected traffic600 by 2040
Trucks6%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1105 over Laurel Branch built?

It was built in 2006, making it 19 years old in 2025.

What condition is SR1105 over Laurel Branch 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 2024.

How much traffic does SR1105 over Laurel Branch carry?

About 300 vehicles per day (1995 count), of which roughly 6% are trucks.

How long is SR1105 over Laurel Branch?

The structure is 77 ft (23.4 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.

Who owns SR1105 over Laurel Branch?

It is owned by the State Highway Agency.