US Bridges

Watson School Road over Big Run Branch

Good

Grayson County, Kentucky · 0.15 MI W of JCT Ky 737 · Structure no. 043C00067N

Built
1985
40 years old, rebuilt 2021
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
105
2021 count
Owner
County
County Highway Agency

About this bridge

Watson School Road over Big Run Branch is a prestressed concrete box beam or girders - multiple carrying Watson School Road over Big Run Branch in Grayson County, Kentucky. It was built in 1985 and reconstructed in 2021, so it is 40 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 105 vehicles a day, projected to reach 105 by 2041. The structure is 32 ft (9.7 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesWatson School Road
CrossesBig Run Branch
Location0.15 MI W of JCT Ky 737
RouteCounty Highway 1100
CountyGrayson County
StateKentucky
Coordinates37.50778, -86.32611
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length32 ft (9.7 m)
Longest span31 ft (9.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2021)
Projected traffic105 by 2041
Trucks0%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Watson School Road over Big Run Branch built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2021.

What condition is Watson School Road over Big Run 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 April 2023.

How much traffic does Watson School Road over Big Run Branch carry?

About 105 vehicles per day (2021 count).

How long is Watson School Road over Big Run Branch?

The structure is 32 ft (9.7 m) long with a longest span of 31 ft (9.4 m) and a deck 20 ft wide.

Who owns Watson School Road over Big Run Branch?

It is owned by the County Highway Agency.