US Bridges

Shady Grove RD over Middle Creek

PoorPosted for load

Natchitoches Parish, Louisiana · 1.06 Mi. East of LA 117 · Structure no. 083531314931131

Built
1983
42 years old
Condition
Poor
inspected February 2023
Type
Channel Beam
Prestressed Concrete
Length
57 ft
3 main spans
Daily traffic
90
2022 count
Owner
County
County Highway Agency

About this bridge

Shady Grove RD over Middle Creek is a prestressed concrete channel beam carrying Shady Grove RD over Middle Creek in Natchitoches Parish, Louisiana. It was built in 1983, so it is 42 years old, younger than the Louisiana average of 43 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. Its operating status is: posted for load restriction.

It carries about 90 vehicles a day, projected to reach 99 by 2042. The structure is 57 ft (17.4 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesShady Grove RD
CrossesMiddle Creek
Location1.06 Mi. East of LA 117
RouteCounty Highway 0
Coordinates31.52417, -93.1881
Functional classRural Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34.3 US tons
Inventory rating17.2 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2022)
Projected traffic99 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$217,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Shady Grove RD over Middle Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Shady Grove RD over Middle Creek 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 February 2023.

How much traffic does Shady Grove RD over Middle Creek carry?

About 90 vehicles per day (2022 count).

How long is Shady Grove RD over Middle Creek?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns Shady Grove RD over Middle Creek?

It is owned by the County Highway Agency.