US Bridges

N Main ST over Little Vince Bayou

FairPosted for load

Harris County, Texas · 0.30 MI N of SH 225 · Structure no. 121020C01966001

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
100
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

N Main ST over Little Vince Bayou is a prestressed concrete box beam or girders - multiple carrying N Main ST over Little Vince Bayou in Harris County, Texas. It was built in 1978, so it is 47 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, projected to reach 9,370 by 2027. The structure is 102 ft (31.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesN Main ST
CrossesLittle Vince Bayou
Location0.30 MI N of SH 225
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.71447, -95.20956
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length102 ft (31.1 m)
Longest span33 ft (10.1 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2010)
Projected traffic9,370 by 2027
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Main ST over Little Vince Bayou built?

It was built in 1978, making it 47 years old in 2025.

What condition is N Main ST over Little Vince 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 November 2023.

How much traffic does N Main ST over Little Vince Bayou carry?

About 100 vehicles per day (2010 count).

How long is N Main ST over Little Vince Bayou?

The structure is 102 ft (31.1 m) long with a longest span of 33 ft (10.1 m) and a deck 36 ft wide.

Who owns N Main ST over Little Vince Bayou?

It is owned by the Town or Township Highway Agency.