US Bridges

SH 321 over Luce Bayou

Fair

Liberty County, Texas · 4.0 MI SE of FM 1008 · Structure no. 201460059301012

Built
1969
56 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
160 ft
4 main spans
Daily traffic
6,078
2022 count
Owner
State
State Highway Agency

About this bridge

SH 321 over Luce Bayou is a concrete stringer/multi-beam or girder carrying SH 321 over Luce Bayou in Liberty County, Texas. It was built in 1969, so it is 56 years old, older than the Texas average of 44.4 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 6,078 vehicles a day, roughly 13% of them trucks, projected to reach 7,340 by 2033. The structure is 160 ft (48.8 m) long and 46 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesSH 321
CrossesLuce Bayou
Location4.0 MI SE of FM 1008
RouteState Highway 321
CountyLiberty County
StateTexas
Coordinates30.18075, -94.93996
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,078 (2022)
Projected traffic7,340 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 321 over Luce Bayou built?

It was built in 1969, making it 56 years old in 2025.

What condition is SH 321 over Luce Bayou 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 2024.

How much traffic does SH 321 over Luce Bayou carry?

About 6,078 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SH 321 over Luce Bayou?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

Who owns SH 321 over Luce Bayou?

It is owned by the State Highway Agency.