US Bridges

Fannin ST over Buffalo Bayou

Fair

Harris County, Texas · 0.2 MI S of IH 10 · Structure no. 121020B23569001

Built
1977
48 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
370 ft
1 main span
Daily traffic
4,653
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fannin ST over Buffalo Bayou is a steel stringer/multi-beam or girder carrying Fannin ST over Buffalo Bayou in Harris County, Texas. It was built in 1977, so it is 48 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 4,653 vehicles a day, projected to reach 6,000 by 2031. The structure is 370 ft (112.8 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFannin ST
CrossesBuffalo Bayou
Location0.2 MI S of IH 10
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.76359, -95.35793
Functional classUrban Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 20
Structure length370 ft (112.8 m)
Longest span160 ft (48.8 m)
Deck width52 ft (16 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,653 (2021)
Projected traffic6,000 by 2031
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$34,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fannin ST over Buffalo Bayou built?

It was built in 1977, making it 48 years old in 2025.

What condition is Fannin ST over Buffalo 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 August 2023.

How much traffic does Fannin ST over Buffalo Bayou carry?

About 4,653 vehicles per day (2021 count).

How long is Fannin ST over Buffalo Bayou?

The structure is 370 ft (112.8 m) long with a longest span of 160 ft (48.8 m) and a deck 52 ft wide.

Who owns Fannin ST over Buffalo Bayou?

It is owned by the City or Municipal Highway Agency.