US Bridges

I85S over SR1577 Muddy Creek

Fair

Randolph County, North Carolina · 0.9 Mi. S. Jct. US311 · Structure no. 000000001510467

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
205 ft
3 main spans
Daily traffic
35,250
2022 count
Owner
State
State Highway Agency

About this bridge

I85S over SR1577 Muddy Creek is a steel stringer/multi-beam or girder carrying I85S over SR1577 Muddy Creek in Randolph 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 35,250 vehicles a day, roughly 16% of them trucks, projected to reach 70,500 by 2040. The structure is 205 ft (62.4 m) long and 59 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85S
CrossesSR1577 Muddy Creek
Location0.9 Mi. S. Jct. US311
RouteInterstate 85
Coordinates35.89748, -79.96622
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating99 US tons
Inventory rating65.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length205 ft (62.4 m)
Longest span92 ft (28 m)
Deck width59 ft (17.9 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,250 (2022)
Projected traffic70,500 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I85S over SR1577 Muddy Creek built?

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

What condition is I85S over SR1577 Muddy Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does I85S over SR1577 Muddy Creek carry?

About 35,250 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I85S over SR1577 Muddy Creek?

The structure is 205 ft (62.4 m) long with a longest span of 92 ft (28 m) and a deck 59 ft wide.

Who owns I85S over SR1577 Muddy Creek?

It is owned by the State Highway Agency.