US Bridges

SH 21 over Niciper Creek

Fair

San Augustine County, Texas · 2.60 MI E of FM 1196 · Structure no. 112030011810087

Built
2018
7 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
250 ft
2 main spans
Daily traffic
2,362
2020 count
Owner
State
State Highway Agency

About this bridge

SH 21 over Niciper Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 21 over Niciper Creek in San Augustine County, Texas. It was built in 2018, so it is 7 years old, younger 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 2,362 vehicles a day, roughly 15% of them trucks, projected to reach 3,307 by 2040. The structure is 250 ft (76.2 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSH 21
CrossesNiciper Creek
Location2.60 MI E of FM 1196
RouteState Highway 21
CountySan Augustine County
StateTexas
Coordinates31.50813, -94.25322
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2 (+1 approach)
Design loadHL 93
Structure length250 ft (76.2 m)
Longest span95 ft (29 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,362 (2020)
Projected traffic3,307 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 21 over Niciper Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is SH 21 over Niciper Creek 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 May 2024.

How much traffic does SH 21 over Niciper Creek carry?

About 2,362 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is SH 21 over Niciper Creek?

The structure is 250 ft (76.2 m) long with a longest span of 95 ft (29 m) and a deck 46 ft wide.

Who owns SH 21 over Niciper Creek?

It is owned by the State Highway Agency.