US Bridges

SR1637 over Third Creek

Good

Alexander County, North Carolina · 0.5 Mi. N. Jct. SR1005 · Structure no. 000000000030126

Built
2008
17 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
93 ft
2 main spans
Daily traffic
1,000
2012 count
Owner
State
State Highway Agency

About this bridge

SR1637 over Third Creek is a prestressed concrete slab carrying SR1637 over Third Creek in Alexander 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 1,000 vehicles a day, roughly 6% of them trucks, projected to reach 2,000 by 2040. The structure is 93 ft (28.3 m) long and 39 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR1637
CrossesThird Creek
Location0.5 Mi. N. Jct. SR1005
RouteState Highway 1637
Coordinates35.84687, -81.05247
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 48 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 alignment6: Equal to present minimum criteria
Operating rating89.9 US tons
Inventory rating53.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length93 ft (28.3 m)
Longest span58 ft (17.6 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2012)
Projected traffic2,000 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 SR1637 over Third Creek built?

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

What condition is SR1637 over Third Creek 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 October 2024.

How much traffic does SR1637 over Third Creek carry?

About 1,000 vehicles per day (2012 count), of which roughly 6% are trucks.

How long is SR1637 over Third Creek?

The structure is 93 ft (28.3 m) long with a longest span of 58 ft (17.6 m) and a deck 39 ft wide.

Who owns SR1637 over Third Creek?

It is owned by the State Highway Agency.