US Bridges

SH 121 SB Exit Rp over SH 171 & Fwwr

Good

Johnson County, Texas · 0.8 MI N of US 67 · Structure no. 021270036503053

Built
2014
11 years old
Condition
Good
inspected June 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
925 ft
8 main spans
Daily traffic
17,300
2013 count
Owner
State
State Highway Agency

About this bridge

SH 121 SB Exit Rp over SH 171 & Fwwr is a prestressed concrete stringer/multi-beam or girder carrying SH 121 SB Exit Rp over SH 171 & Fwwr in Johnson County, Texas. It was built in 2014, so it is 11 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,300 vehicles a day, roughly 1% of them trucks, projected to reach 28,500 by 2033. The structure is 925 ft (281.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSH 121 SB Exit Rp
CrossesSH 171 & Fwwr
Location0.8 MI N of US 67
CountyJohnson County
StateTexas
Coordinates32.38959, -97.41786
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHL 93
Structure length925 ft (281.9 m)
Longest span124 ft (37.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,300 (2013)
Projected traffic28,500 by 2033
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.7 mi (6 km)
TollOn a toll road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 121 SB Exit Rp over SH 171 & Fwwr built?

It was built in 2014, making it 11 years old in 2025.

What condition is SH 121 SB Exit Rp over SH 171 & Fwwr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2022.

How much traffic does SH 121 SB Exit Rp over SH 171 & Fwwr carry?

About 17,300 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is SH 121 SB Exit Rp over SH 171 & Fwwr?

The structure is 925 ft (281.9 m) long with a longest span of 124 ft (37.8 m) and a deck 28 ft wide.

Who owns SH 121 SB Exit Rp over SH 171 & Fwwr?

It is owned by the State Highway Agency and maintained by the State Toll Authority.