US Bridges

I-79 Sbl over Big Sandy Creek/ C.R. 29

Poor

Roane County, West Virginia · 0.33 Mi. N. of Cr. 29 · Structure no. 00000000044A135

Built
1972
53 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
481 ft
2 main spans
Daily traffic
5,800
2019 count
Owner
State
State Highway Agency

About this bridge

I-79 Sbl over Big Sandy Creek/ C.R. 29 is a steel continuous stringer/multi-beam or girder carrying I-79 Sbl over Big Sandy Creek/ C.R. 29 in Roane County, West Virginia. It was built in 1972, so it is 53 years old, older than the West Virginia average of 44.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,800 vehicles a day, roughly 16% of them trucks, projected to reach 8,294 by 2039. The structure is 481 ft (146.5 m) long and 45 ft wide.

CarriesI-79 Sbl
CrossesBig Sandy Creek/ C.R. 29
Location0.33 Mi. N. of Cr. 29
RouteInterstate 79
Coordinates38.57192, -81.26348
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length481 ft (146.5 m)
Longest span130 ft (39.6 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2019)
Projected traffic8,294 by 2039
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-79 Sbl over Big Sandy Creek/ C.R. 29 built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-79 Sbl over Big Sandy Creek/ C.R. 29 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does I-79 Sbl over Big Sandy Creek/ C.R. 29 carry?

About 5,800 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is I-79 Sbl over Big Sandy Creek/ C.R. 29?

The structure is 481 ft (146.5 m) long with a longest span of 130 ft (39.6 m) and a deck 45 ft wide.

Who owns I-79 Sbl over Big Sandy Creek/ C.R. 29?

It is owned by the State Highway Agency.