US Bridges

US0171 over So. Pac RR

Fair

Calcasieu Parish, Louisiana · .1 MI North of US 90 · Structure no. 071000240100191

Built
1994
31 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
646 ft
9 main spans
Daily traffic
19,234
2021 count
Owner
State
State Highway Agency

About this bridge

US0171 over So. Pac RR is a concrete tee beam carrying US0171 over So. Pac RR in Calcasieu Parish, Louisiana. It was built in 1994, so it is 31 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 19,234 vehicles a day, roughly 17% of them trucks, projected to reach 21,157 by 2041. The structure is 646 ft (196.9 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0171
CrossesSo. Pac RR
Location.1 MI North of US 90
RouteU.S. Route 171
CountyCalcasieu Parish
StateLouisiana
Coordinates30.23739, -93.1804
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating49.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length646 ft (196.9 m)
Longest span80 ft (24.4 m)
Deck width39 ft (12 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,234 (2021)
Projected traffic21,157 by 2041
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US0171 over So. Pac RR built?

It was built in 1994, making it 31 years old in 2025.

What condition is US0171 over So. Pac RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does US0171 over So. Pac RR carry?

About 19,234 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is US0171 over So. Pac RR?

The structure is 646 ft (196.9 m) long with a longest span of 80 ft (24.4 m) and a deck 39 ft wide.

Who owns US0171 over So. Pac RR?

It is owned by the State Highway Agency.