US Bridges

SH 121 WB over IH 35W Sbl

Poor

Tarrant County, Texas · 0.3 MI N of E 4th Street · Structure no. 022200001416192

Built
1961
64 years old
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
197 ft
1 main span
Daily traffic
35,634
2022 count
Owner
State
State Highway Agency

About this bridge

SH 121 WB over IH 35W Sbl is a steel continuous stringer/multi-beam or girder carrying SH 121 WB over IH 35W Sbl in Tarrant County, Texas. It was built in 1961, so it is 64 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 35,634 vehicles a day, roughly 2% of them trucks, projected to reach 44,899 by 2042. The structure is 197 ft (60 m) long and 52 ft wide.

CarriesSH 121 WB
CrossesIH 35W Sbl
Location0.3 MI N of E 4th Street
RouteState Highway 347
StateTexas
Coordinates32.76516, -97.3188
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length197 ft (60 m)
Longest span83 ft (25.3 m)
Deck width52 ft (15.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,634 (2022)
Projected traffic44,899 by 2042
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 121 WB over IH 35W Sbl built?

It was built in 1961, making it 64 years old in 2025.

What condition is SH 121 WB over IH 35W Sbl in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does SH 121 WB over IH 35W Sbl carry?

About 35,634 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is SH 121 WB over IH 35W Sbl?

The structure is 197 ft (60 m) long with a longest span of 83 ft (25.3 m) and a deck 52 ft wide.

Who owns SH 121 WB over IH 35W Sbl?

It is owned by the State Highway Agency.