US Bridges

Mills ST over I-10

Fair

Lafayette Parish, Louisiana · .34 MI N of W Willow ST · Structure no. 032804500505081

Built
1968
57 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
222 ft
2 main spans
Daily traffic
2,154
2021 count
Owner
State
State Highway Agency

About this bridge

Mills ST over I-10 is a prestressed concrete stringer/multi-beam or girder carrying Mills ST over I-10 in Lafayette Parish, Louisiana. It was built in 1968, so it is 57 years old, older 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 2,154 vehicles a day, projected to reach 2,369 by 2041. The structure is 222 ft (67.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMills ST
CrossesI-10
Location.34 MI N of W Willow ST
RouteCounty Highway 0
CountyLafayette Parish
StateLouisiana
Coordinates30.24674, -92.0913
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,154 (2021)
Projected traffic2,369 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$982,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mills ST over I-10 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Mills ST over I-10 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 September 2024.

How much traffic does Mills ST over I-10 carry?

About 2,154 vehicles per day (2021 count).

How long is Mills ST over I-10?

The structure is 222 ft (67.7 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns Mills ST over I-10?

It is owned by the State Highway Agency.