US Bridges

SH 146 NB FR over Little Cedar Bayou

Fair

Harris County, Texas · 3.6 MI N of UP RR Spur · Structure no. 121020038905052

Built
1969
56 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
1,898
2023 count
Owner
State
State Highway Agency

About this bridge

SH 146 NB FR over Little Cedar Bayou is a prestressed concrete stringer/multi-beam or girder carrying SH 146 NB FR over Little Cedar Bayou in Harris 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 1,898 vehicles a day, roughly 8% of them trucks, projected to reach 2,657 by 2042. The structure is 120 ft (36.6 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSH 146 NB FR
CrossesLittle Cedar Bayou
Location3.6 MI N of UP RR Spur
RouteState Highway 146
CountyHarris County
StateTexas
Coordinates29.65531, -95.0294
Functional classUrban Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length120 ft (36.6 m)
Longest span39 ft (11.9 m)
Deck width45 ft (13.6 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,898 (2023)
Projected traffic2,657 by 2042
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 146 NB FR over Little Cedar Bayou built?

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

What condition is SH 146 NB FR over Little Cedar 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 2024.

How much traffic does SH 146 NB FR over Little Cedar Bayou carry?

About 1,898 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SH 146 NB FR over Little Cedar Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 39 ft (11.9 m) and a deck 45 ft wide.

Who owns SH 146 NB FR over Little Cedar Bayou?

It is owned by the State Highway Agency.