US Bridges

Iron Ridge RD 775 over Mill Creek

Good

Franklin County, Virginia · 1.70 Rt 919; 0.60 Rt 701 · Structure no. 000000000007977

Built
1964
61 years old, rebuilt 2012
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
605
2022 count
Owner
State
State Highway Agency

About this bridge

Iron Ridge RD 775 over Mill Creek is a prestressed concrete slab carrying Iron Ridge RD 775 over Mill Creek in Franklin County, Virginia. It was built in 1964 and reconstructed in 2012, so it is 61 years old, older than the Virginia average of 50.7 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 605 vehicles a day, roughly 1% of them trucks, projected to reach 675 by 2042. The structure is 103 ft (31.4 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesIron Ridge RD 775
CrossesMill Creek
Location1.70 Rt 919; 0.60 Rt 701
RouteCounty Highway 775
Coordinates37.05343, -79.9036
Functional classRural Major Collector

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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74 US tons
Inventory rating57 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHL 93
Structure length103 ft (31.4 m)
Longest span33 ft (10.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic605 (2022)
Projected traffic675 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$527.3 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Iron Ridge RD 775 over Mill Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2012.

What condition is Iron Ridge RD 775 over Mill 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 May 2024.

How much traffic does Iron Ridge RD 775 over Mill Creek carry?

About 605 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Iron Ridge RD 775 over Mill Creek?

The structure is 103 ft (31.4 m) long with a longest span of 33 ft (10.2 m) and a deck 24 ft wide.

Who owns Iron Ridge RD 775 over Mill Creek?

It is owned by the State Highway Agency.