US Bridges

Forest RD over Lyles Creek

PoorPosted for load

Natchitoches Parish, Louisiana · 2.9 Miles NW of LA 118 · Structure no. 083531254931301

Built
1970
55 years old
Condition
Poor
inspected January 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
80 ft
5 main spans
Daily traffic
32
2022 count
Owner
County
County Highway Agency

About this bridge

Forest RD over Lyles Creek is a wood or timber stringer/multi-beam or girder carrying Forest RD over Lyles Creek in Natchitoches Parish, Louisiana. It was built in 1970, so it is 55 years old, older 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 32 vehicles a day, projected to reach 35 by 2042. The structure is 80 ft (24.4 m) long and 15 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesForest RD
CrossesLyles Creek
Location2.9 Miles NW of LA 118
RouteCounty Highway 0
CountyNatchitoches Parish
StateLouisiana
Coordinates31.42408, -93.2174
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 12 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23 US tons
Inventory rating16 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadH 15
Structure length80 ft (24.4 m)
Longest span17 ft (5.2 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2022)
Projected traffic35 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$288,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest RD over Lyles Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Forest RD over Lyles 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 January 2023.

How much traffic does Forest RD over Lyles Creek carry?

About 32 vehicles per day (2022 count).

How long is Forest RD over Lyles Creek?

The structure is 80 ft (24.4 m) long with a longest span of 17 ft (5.2 m) and a deck 15 ft wide.

Who owns Forest RD over Lyles Creek?

It is owned by the County Highway Agency.